@article{1183142179,
author = {Robinson, Raphael M.},
title = {The Theory of Classes a Modification of Von Neumann's System},
journal = {J. Symbolic Logic},
volume = {2},
number = {2},
year = {1937},
pages = { 29-36},
language = {en},
url = {http://dml.mathdoc.fr/item/1183142179}
}
Robinson, Raphael M. The Theory of Classes a Modification of Von Neumann's System. J. Symbolic Logic, Tome 2 (1937) no. 2, pp. 29-36. http://gdmltest.u-ga.fr/item/1183142179/