@article{1093890710, author = {Cresswell, Max J.}, title = {The completeness of $S1$ and some related systems.}, journal = {Notre Dame J. Formal Logic}, volume = {13}, number = {3}, year = {1972}, pages = { 485-496}, language = {en}, url = {http://dml.mathdoc.fr/item/1093890710} }
Cresswell, Max J. The completeness of $S1$ and some related systems.. Notre Dame J. Formal Logic, Tome 13 (1972) no. 3, pp. 485-496. http://gdmltest.u-ga.fr/item/1093890710/