Concerning some extensions of ${\rm S}4$.
Sobociński, Bolesław
Notre Dame J. Formal Logic, Tome 12 (1971) no. 1, p. 363-370 / Harvested from Project Euclid
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Publié le : 1971-07-14
Classification:  02C10 
@article{1093894300,
     author = {Soboci\'nski, Boles\l aw},
     title = {Concerning some extensions of ${\rm S}4$.},
     journal = {Notre Dame J. Formal Logic},
     volume = {12},
     number = {1},
     year = {1971},
     pages = { 363-370},
     language = {en},
     url = {http://dml.mathdoc.fr/item/1093894300}
}

Sobociński, Bolesław. Concerning some extensions of ${\rm S}4$.. Notre Dame J. Formal Logic, Tome 12 (1971) no. 1, pp.  363-370. http://gdmltest.u-ga.fr/item/1093894300/