1. Generalized quantifiers and natural language
2. Bolinger, Dwight (1978). Asking more than one thing at a time. In Questions, Henry Hiz? (ed.), 107-150. Dordrecht: Reidel.
3. B ring, Daniel (1997). The Meaning of Topic and Focus: The 59th Street Bridge Accent. Routledge Studies in German Linguistics. London and New York: Routledge.
4. Chafe, Wallace L. (1976). Givenness, contrastiveness, definiteness, subjects, topics, and point of view. In Subject and Topic, Charles N. Li (ed.), 25-56, New York: Academic Press.
5. Chomsky, Noam (1977). On wh-movement. In Formal Syntax, Peter W. Culicover, Thomas Wasow, and Adrian Akmajian (eds.), 71-132, New York: Academic Press.