1. Belnap, Nuel D. Jr.: (1972) ‘S-P interrogatives,’ Journal of Philosophical Logic
1, pp,. 331–346.
2. Belnap, Nuel D. Jr. and Dorothy L. Grover: (1973) `Quantifying in and out of quotes,’ in Hughes Leblanc, ed., Truth, Syntax, and Modality, North-Holland, Amsterdam, pp. 17–47.
3. Belnap, Nuel D. Jr. and Thomas B. Steel Jr.: (1976) Thu Logic of Questions and Answers, Yale University Press, New Haven and London.
4. Bennett, Michael: (1977) `A response to Karttunen on questions,’ Linguistics and Philosophy
1, pp. 279–300.
5. Bennett, Michael: (1979) Questions in Montague Grammar, Indiana University Linguistics Club, Bloomington.