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@article{DAN_1980_254_4_a12, author = {V. I. Khomich}, title = {On the problem of separability for superintuitionistic propositional logics}, journal = {Doklady Akademii Nauk}, pages = {820--823}, publisher = {mathdoc}, volume = {254}, number = {4}, year = {1980}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/DAN_1980_254_4_a12/} }
V. I. Khomich. On the problem of separability for superintuitionistic propositional logics. Doklady Akademii Nauk, Tome 254 (1980) no. 4, pp. 820-823. http://geodesic.mathdoc.fr/item/DAN_1980_254_4_a12/