@article{1183732331, author = {Nelson, David}, title = {Review: P. G. J. Vredenduin, The Logic of Negationless Mathematics}, journal = {J. Symbolic Logic}, volume = {21}, number = {1}, year = {1956}, pages = { 92-93}, language = {en}, url = {http://dml.mathdoc.fr/item/1183732331} }
Nelson, David. Review: P. G. J. Vredenduin, The Logic of Negationless Mathematics. J. Symbolic Logic, Tome 21 (1956) no. 1, pp. 92-93. http://gdmltest.u-ga.fr/item/1183732331/