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@article{PIM_1991_N_S_50_64_a0, author = {Milan Tasi\'c}, title = {The {Neg.-propositional} {Calculus}}, journal = {Publications de l'Institut Math\'ematique}, pages = {1 }, publisher = {mathdoc}, volume = {_N_S_50}, number = {64}, year = {1991}, language = {en}, url = {http://geodesic.mathdoc.fr/item/PIM_1991_N_S_50_64_a0/} }
Milan Tasić. The Neg.-propositional Calculus. Publications de l'Institut Mathématique, _N_S_50 (1991) no. 64, p. 1 . http://geodesic.mathdoc.fr/item/PIM_1991_N_S_50_64_a0/