Meissner, Andreas; Wang, Zhou (2006).
MIKoBOS: Innovativer Prototyp der Fraunhofer-Gesellschaft für ein Mobiles Informations- und Kommunikationssystem für BOS
Polizei Verkehr + Technik (PVT) 2/2006, ISSN 0722-5963, pp 71-74

Meissner, Andreas; Wang, Zhou; Putz, Wolfgang; and Grimmer, Jan (2006).
MIKoBOS - A Mobile Information and Communication System for Emergency Response.
Proc. ISCRAM 2006, Third International Conference on Information Systems for Crisis Response and Management, Newark/USA, May 14-17, 2006, Eds.: B. Van de Walle and M. Turoff, ISBN-13: 978-90-9020601-1

Meissner, Andreas; Ursa, Yolanda (2006).
Cold-Trace: A Networked Temperature Sensing System for Food Traceability
Proceedings of INSS2006, 3rd International Conference on Networked Sensing Systems, May 31 - June 2, 2006, Rosemont, Ill., USA, San Diego, Calif.: Transducer Research Foundation, 2006, XV, 247 pages, p. 138, ISBN: 0-9743611-3-5

Meissner, Andreas; Wang, Zhou (2006).
Mobile Data Communication for Emergency Response.
Chapter in: Mobile Multimedia: Communication Engineering Perspective, Editors: Ismail K.. Ibrahim and David Taniar, Nova Science Publishers, ISBN: 1-60021-207-7, forthcoming.

Kirchner, Holger (2005).
Using context of a mobile user to predict relevant information. "Context-Aware Mobile Systems (CAMS'05) Workshop in conjunction with OnTheMove Federated Conferences (OTM'05)", Agia Napa, Cyprus, 31 Oct - 4 Nov 2005, http://www.cs.rmit.edu.au/fedconf.

Kirchner, Holger; Glöckner, Daniel; Bieber, Gerald; Gabrecht, Sven (2005).
"Addressing geographic objects of unique location areas". "Workshop für Ortsbezogene Anwendungen und Dienste, Do 16. und Fr 17. Juni 2005, Universität Stuttgart, Germany June 16-17, 2005, http://dreamteam.fernuni-hagen.de/fg_lbs/fg_lbs.html.

Kirchner, Holger; Mahleko, Bendick; Eklington, Lorna; Eklington, Tony (2005).
eureauwebTM – An Information System for Users of European Inland Waterways. "The 6th International Conference on Mobile Data Management (MDM'05)", Ayia Napa, Cyprus, May 9-13, 2005, http://www2.cs.ucy.ac.cy/mdm05.

Meissner, Andreas (2005).
Ein Modell für das A-Priori-Integritätsmanagement in Multicast-Gruppen
Berlin: Logos-Verlag, 2005, 182 S. Zugl.: Braunschweig, Techn. Univ., Diss., 2005. ISBN: 3-8325-0849-X (in German)

Kirchner, Holger; Wang, Zhou (2004)
"Support Location-Awareness in Service Discovery for Mobile Users".
In 2nd International Workshop on Managing Ubiquitous Communications and Services (MUCS 2004),
Organised by the HEA PRLTI M-ZONES project
13.-14. December 2004, Trinity College, Dublin, Ireland
pp 64-73

Klappenbach, Diego; Meissner, Andreas; Ursa, Yolanda (2004).
Linking Trucks and Central Operations Base - Multimedia Enhancements for the Coldroad System
The Second International Conference on Advances in Mobile Multimedia (MOMM2004)
Bali, Indonesia, 22-24 September 2004
Published by Austrian Computer Society, G. Kotsis, D. Taniar, I.K. Ibrahim
ISBN 3-85403-184-X, pp 87-91

Wang, Zhou; Meissner, Andreas; Grimmer, Jan; Richter Stefanie (2004).
A Mobile Multimedia Emergency Response Information System for Public Safety Organizations
The Second International Conference on Advances in Mobile Multimedia (MOMM2004)
Bali, Indonesia, 22-24 September 2004
Published by Austrian Computer Society, G. Kotsis, D. Taniar, I.K. Ibrahim
ISBN 3-85403-184-X, pp 319-320

Wang, Zhou; Hend Koubaa (2004)
A Hybrid Content Location Approach between Structured and Unstructured Topology<
Proceedings of Med-Hoc-Net 2004
Third Annual Mediterranean Ad Hoc Networking Workshop
Bodrum, Turkey, 27-30 June 2004
Edited by Ian F. Akyildiz, Erdal Cayirci, Eylem Ekici, Giacomo Morabito
Sponsored by Ericcson Turkey, Turkcell
ISBN 975-98840-0-3, pp 184-196

Kirchner, Holger;Krummenacher, Reto; Risse, Thomas; Edwards-May, David (2004
"A Location-aware Prefetching Mechanism", Fourth International Network Conference (INC 2004),
6-8 July 2004, Plymouth, UK,
ISBN 1-84102-125-3, pp. 453-460

Kirchner, Holger; Mahleko, Bendick; Kelly, Mike; Krummenacher, Reto and Wang, Zhou (2004).
"eureauweb – An Architecture for a European Waterways Networked Information System".
Conference on Information and Communication Technologies in Tourism 2004 (ENTER 2004); Cairo, Egypt, 26-29 January 2004;
Published by Springer, Wien, New York; ISBN 3-211-20669-8, pp 65.75.

Meissner, Andreas; Steinebach, Martin (2004).
"Neue IT-Infrastrukturen im Notfall- und Rettungswesen -
Potential und Risiko".
Netz und Computersicherheit;
Published by W. Bertelsmann Verlag,
Jan von Knop (Hrsg.), Hans Frank (Hrsg.)
ISBN 3-7639-3205-4, pp 321-336

Klappenbach, Diego; Hollfelder, Silvia; Meissner, Andreas; Wilbert, Stefan (2004).
"From Analog Voice Radio to ICT: Data Communication and Data Modeling for the German NBC Reconnaissance Vehicle".
ISCRAM 2004: International Workshop on Information Systems for Crisis Response and Management, Brussels, May 3 -4 2004; proceedings / Carle, Benny[Hrsg.]; Van de Walle, Bartel[Hrsg.]; International Workshop on Information Systems for Crisis Response and Management <1, 2004, Brüssel>. - Brüssel , 2004. - opt. Speicherplatte(n) (CD-ROM usw.). - Begleitmaterial: Book of abstracts. ISBN 9076971080.

Meissner, Andreas; Paradiso, Aldo (2004).
"HCI in the INVITE Project:
Embedding the WebFace Avatar Tool into a Web-Based Dialogue System for Mobile Users".
Multikonferenz Wirtschaftsinformatik (MKWI) 2004;
Universität Duisburg-Essen 9.-11. März 2004
Band 3: Mobile Business Systems Mobile and Collaborative Business Techniques for Mobile Commerce (TAMoCo)
(Akademische V.-G. Aka)
ISBN 3-89838-051-3, pp 228-240

Branki, Cherif; Biegus, Lucasz; Mc Glinchey, Stephen; Crowe, Malcom; Meissner, Andreas; (2004).
"Electronic and Mobile Commerce:
An Agent Augmented Business Workflow Interoperability".
Multikonferenz Wirtschaftsinformatik (MKWI) 2004;
Universität Duisburg-Essen 9.-11. März 2004
Band 3: Mobile Business Systems Mobile and Collaborative Business Techniques for Mobile Commerce (TAMoCo)
(Akademische V.-G. Aka)
ISBN 3-89838-051-3, pp 287-281

Paradiso, Aldo; Meissner, Andreas (2004).
"INVITE: Das WebFace-Tool - Schlussbericht".
Fraunhofer IPSI, Darmstadt

Meissner, Andreas; Musunoori, Sharath Babu (2003).
"Group Integrity Management Support for Mobile Ad-Hoc Communities". Workshop proceedings Middleware for Pervasive and Ad-Hoc Computing (Middleware 2003 companion); Rio de Janeiro, Brazil, June, 16-20, 2003; held in conjunction with ACM/IFIP/USENIX International Middleware Conference -Middleware 2003 / Ururahy, Christina; Sztajnberg, Alexandre; Cerqueira, Renato (eds.); ISBN 85-87926-03-9, pp 53-59

Musunoori, Sharath Babu (2003).
"Evaluation of Languages for Specifying Integrity Conditions for Multicast Groups", Master Thesis, University of Applied Sciences, Darmstadt, Germany, Jan. 2003

Wang, Zhou.
"An Agent-Based Integrated Service Platform for Wireless and Mobile Environments", PhD Thesis, Universität Karlsruhe, Shaker-Verlag, ISBN 3-8322-1591-3, Aachen, Germany, Juli 2003.

Meissner, Andreas; Mathes, Ioannis; Baxevanaki, Lito; Dore, Giovanna; Branki, Branki (2003).
"The COSMOS Integrated IT solution at railway and motorway construction sites - two case studies". ITcon Vol. 8, Special Issue eWork and eBusiness , pg. 283-291, ISSN 1400-6529, http://www.itcon.org/2003/21

Ripper, Thiemo (2003).
"Personalisierte Vermittlung von Serviceinformationen auf mobilen Endgeräten", Diplomarbeit, University of Applied Sciences, Darmstadt, Germany, March 2003

Adelhardt, Jan (2003).
"Simulation des Service Location Protokolls für drahtlose Netze", Diplomarbeit, University of Applied Sciences, Darmstadt, Germany, 2003

Hermanutz, Stefan (2003).
"Design und Implementierung einer Plattform zur Beschreibung von Dienstinformationen", Diplomarbeit, University of Applied Sciences, Darmstadt, Germany, 2003

Hollick, Matthias; Steinmetz, Ralf (2002).
Security for Ad-Hoc Service Information - Threat Analysis of the Service Location Protocol. In: Enterprise Security, it Verlag für Informationstechnik GmbH, Höhenkirchen, pages 163-176, ISBN 3-936052-03-4, March 2002.

Kirchner, Holger ; Schönfeld, Wolfgang ; Steinmetz, Ralf (2002).
Verfahren zur Diensteerkennung und Diensteinformationsbereitstellung im Vergleich. In: Neue Kommunikationsanwendungen in modernen Netzen, Vorträge der ITG-Fachtagung am 28. Februar und 1. März 2002 in Duisburg, VDE Verlag GmbH, Berlin, Offenbach, pp. 19 - 27, ISBN 3-8007-2680-7, 2002.

Meissner, Andreas; Luckenbach, Thomas; Risse, Thomas; Kirste, Thomas; Kirchner, Holger (2002).
Design Challenges for an Integrated Disaster Management Communication and Information System. The First IEEE Workshop on Disaster Recovery Networks (DIREN 2002), June 24, 2002, New York City, USA, co-located with IEEE INFOCOM 2002.
http://www.comet.columbia.edu/diren/2002_program.html

Meissner, Andreas; Mathes, Ioannis; Baxevanaki, Lito; Dore, Giovanna; Branki, Cherif (2002).
"The COSMOS integrated IT solution at railway and motorway construction sites - a case study" In: eWork and eBusiness in architecture, engineering and construction: Proceedings of the 4th European Conference on Product and Process Modelling in the Building and Related Industries, Portoroz, Slovenia, September 9 - 11, ECPM 2002 / Turk, Ziga (Hrsg.); Scherer, Raimar (Hrsg.), European Conference on Product and Process Modelling in the Building and Related Industries <4,2002,Portoroz>. - Lisse (u.a.): Balkema, 2002. pp. 623 - 626, ISBN 90-5809-507-X, 2002.

Paradiso, Aldo (2002).
An Algebra for combining MPEG-4 compliant Facial Animations. Workshop "Lifelike Animated Agents-Tools, Affective Functions and Applications" in conjunction with the 7th Pacific Rim Int. Conference on Artificial Intelligence, Tokyo, August 19, 2002.

Paradiso, Aldo (2002).
An Algebra of Facial Expressions. Workshop "Embodied Agents: Lets's Specify and Compare Them!" in conjuction with the 1st Int. Joint Conference on autonomous Agents & Multi-Agent Systems, July 15 - 19, 2002.

Paradiso, Aldo (2002).
Angry * (-1) = Surprised!, ERCIM News Bulletin, No. 50, pp. 28 -29, July 2002, Available in pdf, 2002.

Schönfeld, Wolfgang ; Meissner, Andreas; Kirchner, Holger; Steinmetz, Ralf (2002).
Modeling IP-Based Mobility Management. In: Communication Networks and Distributed Systems Modeling and Simulation - CNDS 2002, January 27 - 31, San Antonio, Texas, Edited by Taieb Znati and Bruce McDonald, Sponsored by The Society for Modeling and Simulation International, San Diego, CA, USA, pp. 255 - 260, ISBN 1-56555-244-X, 2002.
Available as PS or as PDF

Diaz, Michel; Canonico, Roberto; Costa, Luis; Fdida, Serge; Hutchison, David; Mathy, Laurent; Meissner, Andreas; Owezarski, Stephane; Vida, Rolland; Wolf, Lars (2001).
"GCAP: A New Multimedia Multicast Architecture for QoS". In: Proc. 6th International Conference on Protocols for Multimedia Systems (PROMS 2001), Sinderen, M. J. van, Nieuwenhuis, L. J. M. (Eds.) Springer LNCS, October 17 - 19, Enschede, The Netherlands, pp. 103 - 115, ISBN 3-540-42708-2, 2001.

Hollick, Matthias; Steinmetz, Ralf (2001). Security Goals for Service Discovery in Ad-hoc Environments. In: Proceedings of International Conference on Software, Telecommunications and Computer Networks, SoftCOM 2001, pp. 1025-1032. FESB-Split, ISBN 953-6114-44-5, October 2001.

Hollick, Matthias (2001).
Secure Service Centered Networking for Nomadic Usage. In: Communications and Multimedia Security Issues of the New Century, IFIP TC6 / TC11 Joint Working Conference on Communications and Multimedia Security (CMS'01), May 21 - 22, Darmstadt, Germany, Steinmetz R., Dittmann J., Steinebach M. (Eds.), Kluwer Academic Publishers Boston/Dordecht/London, pp. 375 - 380, ISBN 0-7923-7365-0, 2001.

Hollick, Matthias (2001).
Security Awareness in Service Discovery for Multimedia Collaboration. In: Proceedings of ACM Multimedia 2001 Workshops, Multimedia and Security: New Challenges, October 5, Ottawa, Canada, Association for Computing Machinery, Inc. (ACM), New York, NY, USA, pp. 60 - 63, ACM ISBN 1-58113-393-6, 2001.

Hollick, Matthias; Meissner, Andreas; Wolf, Lars; Steinmetz, Ralf (2001).
A Security Model for Multicast Group Integrity Management. Poster Session of Third Int. Workshop on Networked Group Communication (NGC 2001), UCL, London, UK, 7 - 9 November 2001, http://www-mice.cs.ucl.ac.uk/ngc2001/

Meissner, Andreas; Huang, Haiming; Pommnitz, Jörg; Steinmetz, Ralf (2001).
"QoS Support for Video Conferencing in the COSMOS System" In: Proc. Multimedia Technology and Applications Conference (MTAC 2001), University of California, Irvine/CA, USA, November 7 - 9, IEEE Computer Society, Los Alamitos, CA, USA, pp. 178 - 184, 2001.

Meissner, Andreas; Baxevanaki, Lito; Mathes, Ioannis; Branki, Cherif; Schönfeld, Wolfgang; Crowe, Malcolm; Steinmetz, Ralf (2001).
"Integrated Mobile Operations support for the Construction Industry: The COSMOS Solution" In: Proceedings of the 5th World Multi-Conference on Systemics, Cybernetics and Informatics, SCI 2001, International Institute of Informatics and Systemics, July 22 - 25, Orlando, Florida, USA, IIIS, Orlando, FL, USA, pp. 248 - 255, ISBN 980-07-7544-7, 2001.

Meissner, Andreas; Wolf, Lars; Schönfeld, Wolfgang; Steinmetz, Ralf (2001).
"A Framework for Group Integrity Management in Multimedia Multicasting" In: Proc. Euromicro Workshop on Multimedia and Telecommunication (EMMTC2001), 27th Euromicro Conference, September 4 - 6, Warsaw, Poland, IEEE Computer Society Press, Los Alamitos, CA, USA, pp. 346 - 353, ISBN 0-7695-1236-4, 2001.

Meissner, Andreas; Wolf, Lars; Hollick, Matthias; Steinmetz, Ralf (2001).
"Security Issues in Group Integrity Management for Multimedia Multicasting" Third International Conference on Information, Communications & Signal Processing (ICICS 2001), Singapore, October 15 - 18, Nanyang Technological University, Singapore, ISBN 981-04-5149-0 (CD-ROM), 2001.

Meissner, Andreas; Wolf, Lars; Steinmetz, Ralf (2001).
"A novel Group Integrity Concept for Multimedia Multicasting" In: Proc. 8th International Workshop on Interactive Distributed Multimedia Systems (IDMS 2001), Springer LNCS, September 4 - 7, Lancaster, UK, pp. 233 - 244, ISBN 3-540-42530-6, 2001.

Paradiso, Aldo; L'Abbate, Marcello (2001).
A Model for the Generation and Combination of Emotional Expressions. In: Workshop on  Representing, Annotating, and Evaluating Non-Verbal and Verbal Communicative Acts to Achieve Contextual Embodied Agents, in conjunction with the The Fifth International Conference on Autonomous Agents, May 29, 2001, Montreal, Canada.

Paradiso, Aldo; Zambetta, Fabio; Abbattista, Fabio (2001).
Fanky: A Tool for Animating Faces of 3D Agents. In: IVA 2001 - Third International Workshop on Intelligent Virtual Agents, September 10-11, Madrid, Spain, Proceedings edited by Angelica de Antonio, Ruth Aylett and Daniel Ballin, Springer Verlag - Lecture Notes in Computer Sciences; Vol. 2190: Lecture Notes in Artificial Intelligence, pp. 242 - 243, 2001.

Zambetta, Fabio; Paradiso, Aldo; Abbattista, Fabio; Semeraro, Giovanni (2001).
SAMIR: An Agent to Personalize User Interactions. In: SoftCOM 2001 - International Conference on Software, Telecommunications and Computer Networks, October 09-12, 2001, Split, Dubrovnik (Croatia), Ancona, Bari (Italy), Proceedings edited by Nikola Rozic and Dinko Begusic, published by FESB-Split, pp. 431 - 438, ISBN 953-6114-44-5, 2001.

Klappenbach, Diego (2001)
"Bluetooth - The technology, its market factors and a possible bridge to wired computer networks". Master Thesis; Department of Industrial Economics and Management; Royal Institute of Technology; Sweeden.

Hollick, Matthias (2000).
"The Evolution of Mobile IP Towards Security" In: Sicherheit in Netzen und Medienströmen, Tagungsband des GI-Workshops "Sicherheit in Mediendaten", Berlin, 19. September, pp. 38 - 49, ISBN 3-540-67926-X, 2000.

Huang, Haiming; Meissner, Andreas; Schönfeld, Wolfgang; Steinmetz, Ralf (2000).
QoS Policy Framework and its Implementation. In: Proceedings of 2000 International Conference on Communication Technology, August 21 - 25, Beijing, China, Vol. I, ISBN 7-7803-6394-9, pp.860 - 867, 2000.

Karsten, Martin; Berier, Nicole; Schmitt, Jens; Steinmetz, Ralf (2000).
on the Feasibility of RSVP as General Signalling Interface. In: Proceedings of Quality of future Internet Services Workshop (QofIS 2000), Berlin, Germany, Springer LNCS, pp. 105 - 116, ISBN 3-540-41076-7, September 2000.

Schönfeld, Wolfgang (2000).
Internet und FMC. In: FMC - Konvergenz von Fest- und Mobilfunknetzen, VDE-Verlag, ISBN 3-8007-2536-3, Sept. 2000, 49-53.

Schönfeld, Wolfgang; Schopp, Michael; Becker, Helmut (2000).
Mobilitätsverwaltungskonzepte. In: FMC - Konvergenz von Fest- und Mobilfunknetzen. VDE-Verlag, ISBN 3-8007-2536-3, Sept. 2000, 53-58.

Schönfeld, Wolfgang; Steinmetz, Ralf; Berier, Nicole; Wolf, Lars (2000).
QoS in Mobile Multimedia Networks. In: Proceedings of 2000 International Conference on Communication Technology, August 21 - 25, Beijing, China, Vol. I, ISBN 7-7803-6394-9, pp.860 - 867, 2000.

Ackermann, Ralf; Pommnitz, Jörg; Wolf, Lars; Steinmetz, Ralf (1999).
Virtuelle PBX. Presented at the 1. GI Multicast Workshop "Multicast - Protokolle und Anwendungen", Braunschweig May 20-21, 1999.

Ackermann, Ralf; Pommnitz, Jörg; Wolf, Lars; Steinmetz, Ralf (1999).
MBone2Tel - Telephone meeting the MBone. In: Diaz, Michel, Owezarski, Phillipe, Senac, Patrick (Eds.): International Workshop on Interactive distributed multimedia systems and telecommunication services, Juni 1999, Toulouse. Berlin (u. a.): Springer-Verlag, 1999 (Lecture Notes in Computer Science No. 1718), S. 121 -132, ISBN 3-540-66595.

Fries, Georg; Paradiso, Aldo ; Nack, Frank; Schumacher, Karlheinz (1999).
A Tool for Designing MPEG-4 compliant Expressions and Animations on VRML Cartoon Faces. In: Dominic W. Massaro (Ed.): Proceedings of AVSP '99, Auditory-Visual Speech Processing. International Conference, Santa Cruz, California, USA, August 7 - 10, 1999. Santa Cruz, 1999, pp. 145 - 150, ISBN 0-9674047-0-3.

Karsten, Martin; Berier, Nicole; Lars, Wolf; Steinmetz, Ralf (1999).
A Policy-Based Service Specification for Resource Reservation in Advance. In: Proceedings of the International Conference on Computer Communications (ICCC'99), Tokyo, Japan, pp. 82 - 88, ISBN 1-891365-05-3, September 1999.

Massari, A.; Saladini, L.; Sisinni, Fabio; Napolitano, W.; Hemmje, Matthias; Paradiso, Aldo ; Leissler, Martin (1999).
Virtual Reality Systems For Browsing Multimedia. In: Borko Furth (Ed.): Handbook of Multimedia Computing, Boca Raton etc.: CRC Press, 1999, pp. 713 - 736, ISBN 0-8493-1825-4.

Meadows, Jack; Böcker, Heinz-Dieter (Eds.) (1999).

Pajares, Ana; Berier, Nicole; Lars, Wolf; Steinmetz, Ralf (1999).
An Approach to Support Mobile QoS in an Integrated Services Packet Network. First Workshop on IP Quality of Service for Wireless and Mobile Networks (IQWiM´99). Aachen, Germany. April 9th, 1999.

Paradiso, Aldo; Nack, Frank; Fries, Georg; Schuhmacher, Karlheinz (1999).
The Design of Expressive Cartoons for the Web - TINKY In: Proceedings of the IEEE International Conference on Multimedia Computing Systems, June 7 - 11, 1999, Florence, Italy. Los Alamitos: IEEE Computer Society, 1999, pp. 276 - 281, ISBN 0-7695-0253-9.

Pommnitz, Jörg; Schönfeld, Wolfgang (1999).
"A testbed for mobile multimedia applications", Journal of Multimedia Tools and Applications, 9 (1999), No. 1, pp. 29 - 42. Dordrecht: Kluwer, 1999, ISSN 1380-7501.

Costabile, Maria Francesca; Malerba, D.; Hemmje, Matthias; Paradiso, Aldo (1998).
Building Metaphors for Supporting User Interaction with Multimedia Databases, In Proceedings of 4th IFIP 2.6 Working Conference on Visual DataBase Systems - VDB 4, L'Aqulia, Italy, May 27-29, 1998.

Massari, Antonio; Saladini, Lorenzo; Sisinni, Fabio; Napolitano, Walter; Hemmje, Matthias; Paradiso, Aldo & Leissler, Martin (1998).
Virtual Reality Systems for Browsing Multimedia
In Furht, Borko (Ed.) Handbook of Multimedia Computing, Chapter 34, pp. 713-736, CRC Press, Boca Raton, Florida, ISBN 0-8493-1825-4.

Schönfeld, Wolfgang (1998).
"Interacting Abstract State Machines", 5th International Workshop on Abstract State Machines, Proceedings of the 28th Annual Conference of the German Society of Computer Science, Technical Report, Magdeburg University, 1998. Also available via the ASM homepage through ftp.

Dahn, Bernd Ingo; Lettmann, Theo & Schönfeld, Wolfgang (1991).
ILFA Interface Concept. IWBS-Report 193, IBM TR-80.91-047. Heidelberg

Börger, Egon; Kleine Büning, Hans; Richter, Michael; Schönfeld, Wolfgang (Eds.) (1991).
Computer Science Logic, 4th Workshop, CSL '90, Heidelberg, Germany, October 1-5, 1990, Proceedings. Lecture Notes in Computer Science, Vol. 533, Springer.