CLP

• Paris C. Kanellakis, Gabriel M. Kuper, Peter Z. Revesz: Constraint Query Languages. PODS 1990: 299-313 full version: Paris C. Kanellakis, Gabriel M. Kuper, Peter Z. Revesz: Constraint Query Languages. J. Comput. Syst. Sci. 51(1): 26-52(1995)
• Paris C. Kanellakis, Sridhar Ramaswamy, Darren Erik Vengroff, Jeffrey Scott Vitter: Indexing for Data Models with Constraints and Classes. PODS 1993: 233-243
• Paris C. Kanellakis, Dina Q. Goldin: Constraint Programming and Database Query Languages. Brown University Technical Report CS-94-31
• Pascal Van Hentenryck, Viswanath Ramachandran: Backtracking without Trailing in CLP(R-lin). PLDI 1994: 349-360

• The Constraints archive at City University, London, UK