@article{1183734038, author = {Vaughan, H. E.}, title = {Review: Karl Menger, What are x and y?}, journal = {J. Symbolic Logic}, volume = {25}, number = {1}, year = {1960}, pages = { 266-267}, language = {en}, url = {http://dml.mathdoc.fr/item/1183734038} }
Vaughan, H. E. Review: Karl Menger, What are x and y?. J. Symbolic Logic, Tome 25 (1960) no. 1, pp. 266-267. http://gdmltest.u-ga.fr/item/1183734038/