Next Generation Information Technologies and Systems 4th International Workshop, NGITS'99 Zikhron-Yaakov, Israel, July 5-7, 1999 Proceedings Pinter Ron Y. Heftet / 1999 / Engelsk
Deductive and Object-Oriented Databases Third International Conference, DOOD '93, Phoenix, Arizona, USA, December 6-8, 1993. Proceedings Ceri Stefano Heftet / 1993 / Engelsk
