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6Risto Hilpinen ( eds. ), New Studies in Deontic Logic_Norms, Actions and the Foundation of Ethics[M]. Dordrech, D Reidel Publish Company, 1981, p. 38 ; p. 65 ;pp. 63 -64.
二级参考文献13
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6[7]Hector-Neri Castaneda. The Paradox of Deontoc Logic: the Simple Solution to All of Them in One Fell Swoop [A]. R. Hilpine (ed). New Studies in Deontic Logic [M]. D. reidel publishing Company,1981 ,pp37-85.
7[8]Roderick M. Chisholm. Contrary-to-duty Imperatives and Deontic Logic [J]. Analysis, 1963, (24): pp33-36.
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