@book{187498,
	author = { Белнап, Н. and  Стил, Т.},
	title = {Логика вопросов и ответов /},
	publisher = {Прогресс,},
	year = {1981.},
	address = {М. :},
	note = {Перевод изд.: The logic of questions and answers / Nuel D. Belnap, Thomas B. Steel (New Haven and London, 1976).}
}