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@article{PORMA_1992__49_1_115774, author = {Figallo, Aldo and Ziliani, Alicia}, title = {On the propositional system {A} of {Sobocinski}}, journal = {Portugaliae mathematica}, pages = {11--22}, publisher = {mathdoc}, volume = {49}, number = {1}, year = {1992}, mrnumber = {1165918}, zbl = {0768.03007}, language = {en}, url = {http://geodesic.mathdoc.fr/item/PORMA_1992__49_1_115774/} }
Figallo, Aldo; Ziliani, Alicia. On the propositional system A of Sobocinski. Portugaliae mathematica, Tome 49 (1992) no. 1, pp. 11-22. http://geodesic.mathdoc.fr/item/PORMA_1992__49_1_115774/