Johan van den Akker

QML: a paraconsistent default logic

Johan van den Akker, Yao Hua TANt, 1993 .

DEGAS: an active, temporal database of autonomous objects

Johan van den Akker, J. V. D. Akker, 1998 .

Enriching Active Databases with Agent Technology

Arno Siebes, Johan van den Akker, A. Siebes, 1997, CIA.

DEGAS: A Database of Autonomous Objects

Arno Siebes, Johan van den Akker, A. Siebes, 1997, Inf. Syst..

DEGAS: Capturing Dynamics in Objects

Arno Siebes, Johan van den Akker, A. Siebes, 1996, CAiSE.

Object histories as a foundation for an active OODB

Arno Siebes, Johan van den Akker, A. Siebes, 1996, Proceedings of 7th International Conference and Workshop on Database and Expert Systems Applications: DEXA 96.