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@article{CM_1953__11__204_0, author = {Vredenduin, P. G. J.}, title = {The logic of negationless mathematics}, journal = {Compositio Mathematica}, pages = {204--270}, publisher = {Kraus Reprint}, volume = {11}, year = {1953}, mrnumber = {61566}, zbl = {0053.20201}, language = {en}, url = {http://geodesic.mathdoc.fr/item/CM_1953__11__204_0/} }
Vredenduin, P. G. J. The logic of negationless mathematics. Compositio Mathematica, Tome 11 (1953), pp. 204-270. http://geodesic.mathdoc.fr/item/CM_1953__11__204_0/