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@article{CM_1937__4__112_0, author = {Freudenthal, Hans}, title = {Zur intuitionistischen {Deutung} logischer {Formeln}}, journal = {Compositio Mathematica}, pages = {112--116}, publisher = {Johnson Reprint Corporation}, volume = {4}, year = {1937}, zbl = {0015.24201}, language = {de}, url = {http://geodesic.mathdoc.fr/item/CM_1937__4__112_0/} }
Freudenthal, Hans. Zur intuitionistischen Deutung logischer Formeln. Compositio Mathematica, Tome 4 (1937), pp. 112-116. http://geodesic.mathdoc.fr/item/CM_1937__4__112_0/