@article{1058448674, author = {Kanamori, Akihiro}, title = {The empty set, the singleton, and the ordered pair}, journal = {Bull. Symbolic Logic}, volume = {09}, number = {1}, year = {2003}, pages = { 273- 298}, language = {en}, url = {http://dml.mathdoc.fr/item/1058448674} }
Kanamori, Akihiro. The empty set, the singleton, and the ordered pair. Bull. Symbolic Logic, Tome 09 (2003) no. 1, pp. 273- 298. http://gdmltest.u-ga.fr/item/1058448674/