1. Bordelois, Ivonne: 1986, ?Parasitic Gaps in Spanish: Extensions of Restructuring?, in Ivonne Bordelois, Heles Contreras and Karen Zagona (eds.),Generative Studies in Spanish Syntax, Foris, Dordrecht.
2. Bresnan, Joan: 1971, ?Sentence Stress and Syntactic Transformations?,Language 47, 297?321.
3. Chomsky, Noam: 1973, ?Conditions on Transformations?, reprinted in N. Chomsky,Essays on Form and Interpretation, North-Holland, Amsterdam, 1977.
4. Chomsky, Noam: 1977, ?On Wh-Movement?, in Peter W. Culicover, Thomas Wasow and Adrian Akmajian (eds.),Formal Syntax, Academic Press, New York, pp. 71?132.
5. Chomsky, Noam: 1981,Lectures on Government and Binding, Foris, Dordrecht.