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2. Higginbotham, J.: 1980, ?Pronouns and Bound Variables?, Linguistic Inquiry 11, 679?708.
3. Jackendoff, R.: 1977, X Theory, MIT Press, Cambridge.
4. Pustejovsky, J. and E. Williams: in preparation, ?Principle B?.
5. Roeper, T.: 1983, ?Implicit Arguments?, manuscript, University of Massachusetts.