@article{1093870688, author = {Yasuhara, Mitsuru}, title = {Extensionality in Bernays set theory.}, journal = {Notre Dame J. Formal Logic}, volume = {25}, number = {1}, year = {1984}, pages = { 357-363}, language = {en}, url = {http://dml.mathdoc.fr/item/1093870688} }
Yasuhara, Mitsuru. Extensionality in Bernays set theory.. Notre Dame J. Formal Logic, Tome 25 (1984) no. 1, pp. 357-363. http://gdmltest.u-ga.fr/item/1093870688/