1. Aoun, J.: 1985, A Grammar of Anaphora, MIT Press, Cambridge, Mass.
2. Barrs, A.: 1986, Chains and Anaphoric Dependence Ph.D. dissertation, MIT, Cambridge, Mass.
3. Lexicon project working paper 13;A Belletti,1986
4. Bolotsky, S.: 1982, Unpublished ms. U-Mass. Amherst.
5. Borer, H.: 1983, Parametric Syntax, Foris Publications, Dordrecht.