@article{1183736435, author = {Zeman, J. Jay}, title = {The Semisubstitutivity of Strict Implication}, journal = {J. Symbolic Logic}, volume = {33}, number = {1}, year = {1968}, pages = { 462-464}, language = {en}, url = {http://dml.mathdoc.fr/item/1183736435} }
Zeman, J. Jay. The Semisubstitutivity of Strict Implication. J. Symbolic Logic, Tome 33 (1968) no. 1, pp. 462-464. http://gdmltest.u-ga.fr/item/1183736435/