- ICIS, page 271-282. Association for Information Systems, (2003)
- ECCE, page 265-266. Universitätsdruckerei Rostock, Germany / ACM, (2011)
- Repr. Theory Appl. Categ. (2006)Reprint of the 1990 original Wiley, New York; MR1051419 .
- MAICS, volume 710 of CEUR Workshop Proceedings, page 160-163. CEUR-WS.org, (2011)
- LOG IN 31(168):35-41 (2011)
- IEEE Trans. Pattern Anal. Mach. Intell. 10(1):79-91 (1988)
- Information Systems Frontiers 13(4):595-611 (2011)
- INFOS, volume P-189 of LNI, page 187-196. GI, (2011)
- Enterprise Modelling and Information Systems Architectures 6(3):5-24 (2011)
- Theor. Comput. Sci. 136(1):79-107 (1994)
- Cold and Ultracold Molecules, Faraday Discussions, volume 142, 2009, p.143 (2009)
- EC-Web, volume 3182 of Lecture Notes in Computer Science, page 106-115. Springer, (2004)
- TICTTL, volume 6680 of Lecture Notes in Computer Science, page 77-84. Springer, (2011)
- TICTTL, volume 6680 of Lecture Notes in Computer Science, page 85-92. Springer, (2011)
- LPAR, volume 2514 of Lecture Notes in Computer Science, page 403-417. Springer, (2002)
- CADE, volume 2392 of Lecture Notes in Computer Science, page 63-77. Springer, (2002)
- Electr. Notes Theor. Comput. Sci. 82(2):377-394 (2003)
- QofIS, volume 1922 of Lecture Notes in Computer Science, page 194-207. Springer, (2000)
- KI, volume 1303 of Lecture Notes in Computer Science, page 147-158. Springer, (1997)
- CTCS, volume 240 of Lecture Notes in Computer Science, page 299-312. Springer, (1985)


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