1. Ades, A. E. and Steedman, M. J.: 1979, ?On Word-order?, mimeo (University of Warwick).
2. Ajdukiewicz, K.: 1935, ?Uber die syntaktische Konnexitat?, Studia Philosophica 1, 1?27. English translation in Storrs McCall (ed.), Polish Logic 1920?1939 (Oxford University Press), p. 207?231.
3. BachE.: 1977, ?Comments on a Paper by Chomsky?, in P. W.Cullcover, T.Wasow and A.Akmajian (eds.), Formal Syntax (Academic Press, New York).
4. BachE. and HornG.M.: 1976, ?Remarks on ?Conditions on Transformations??, Linguistic Inquiry 7, 265?299.
5. Bar-HillelY., GaifmanC., and ShamirE.: 1960, ?On Categorical and Phrase Structure Grammars?, The Bulletin of the Research Council of Israel 9F, 1?16.