@article{1183741197,
author = {Maddy, Penelope},
title = {Proper Classes},
journal = {J. Symbolic Logic},
volume = {48},
number = {1},
year = {1983},
pages = { 113-139},
language = {en},
url = {http://dml.mathdoc.fr/item/1183741197}
}
Maddy, Penelope. Proper Classes. J. Symbolic Logic, Tome 48 (1983) no. 1, pp. 113-139. http://gdmltest.u-ga.fr/item/1183741197/