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@article{AL_1993_32_6_a5, author = {S. I. Mardaev}, title = {Least fixed points in the {G\"odel-L\"ob} logic}, journal = {Algebra i logika}, pages = {683--689}, publisher = {mathdoc}, volume = {32}, number = {6}, year = {1993}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/AL_1993_32_6_a5/} }
S. I. Mardaev. Least fixed points in the G\"odel-L\"ob logic. Algebra i logika, Tome 32 (1993) no. 6, pp. 683-689. http://geodesic.mathdoc.fr/item/AL_1993_32_6_a5/