@article{1183731831, author = {Bernays, Paul}, title = {A System of Axiomatic Set Theory--Part VII}, journal = {J. Symbolic Logic}, volume = {19}, number = {1}, year = {1954}, pages = { 81-96}, language = {en}, url = {http://dml.mathdoc.fr/item/1183731831} }
Bernays, Paul. A System of Axiomatic Set Theory--Part VII. J. Symbolic Logic, Tome 19 (1954) no. 1, pp. 81-96. http://gdmltest.u-ga.fr/item/1183731831/