1. Hassan Aït-Kaci. An algebraic semantics approach to the effective resolution of type equations. Theoretical Computer Science, 45:293–351 (1986).
2. Hassan Aït-Kaci and Roger Nasr. LOGIN: A logic programming language with built-in inheritance. Journal of Logic Programming, 3:185–215 (1986).
3. Hassan Aït-Kaci and Roger Nasr. Integrating logic and functional programming. Lisp and Symbolic Computation, 2:51–89 (1989).
4. Hassan Aït-Kaci and Andreas Podelski. Functions as passive constraints in LIFE. PRL Research Report 13, Digital Equipment Corporation, Paris Research Laboratory, Rueil-Malmaison, France (June 1991). (Revised, November 1992).
5. Hassan Aït-Kaci and Andreas Podelski. Towards a meaning of LIFE. PRL Research Report 11, Digital Equipment Corporation, Paris Research Laboratory, Rueil-Malmaison, France (1991). (Revised, October 1992; to appear in the Journal of Logic Programming).