1. F. Afrati, S. Cosmadakis. Expressiveness of restricted recursive queries, in: Proc. 21st ACM Symp. on Theory of Computing, ACM Press, New York, 1989, pp. 113–126.
2. On transformations into linear database logic programs;Afrati,1996
3. F. Afrati, C.H. Papadimitriou, The parallel complexity of simple chain queries, in: Proc. 6th ACM Symp. on Principles of Database Systems, ACM Press, New York, 1987, pp. 210–213.
4. Parallel complexity of simple logic programs;Afrati;J. ACM,1993
5. F. Afrati, F. Toni, Chain queries expressible by linear datalog programs, in: U. Geske, C. Ruiz, D. Seipel (Eds.), Proc. 5th Internat. Workshop on Deductive Databases and Logic Programming (DDLP’97), GMD-studien No. 317, Sankt Augustin, 1997, pp. 49–58.