@article{1183730445, author = {Bergmann, Gustav}, title = {Contextual Definitions in Nonextensional Languages}, journal = {J. Symbolic Logic}, volume = {13}, number = {1}, year = {1948}, language = {en}, url = {http://dml.mathdoc.fr/item/1183730445} }
Bergmann, Gustav. Contextual Definitions in Nonextensional Languages. J. Symbolic Logic, Tome 13 (1948) no. 1, . http://gdmltest.u-ga.fr/item/1183730445/