1. Set constraints: Results, applications and future directions;Aiken,1994
2. The complexity of set constraints;Aiken,1993
3. Decidability of systems of set constraints with negative constraints;Aiken;Inform. and Comput,1995
4. Static type inference in a dynamically typed language;Aiken,1991
5. Solving systems of set constraints (extended abstract);Aiken,1992