@article{1183409245, author = {Smullyan, Arthur Francis}, title = {Modality and Description}, journal = {J. Symbolic Logic}, volume = {13}, number = {1}, year = {1948}, pages = { 31-37}, language = {en}, url = {http://dml.mathdoc.fr/item/1183409245} }
Smullyan, Arthur Francis. Modality and Description. J. Symbolic Logic, Tome 13 (1948) no. 1, pp. 31-37. http://gdmltest.u-ga.fr/item/1183409245/