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@article{IVM_1987_2_a9, author = {S. V. Rychkov}, title = {Application of axiomatic set theory to the theory of extensions of modules}, journal = {Izvesti\^a vys\v{s}ih u\v{c}ebnyh zavedenij. Matematika}, pages = {62--69}, publisher = {mathdoc}, number = {2}, year = {1987}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/IVM_1987_2_a9/} }
S. V. Rychkov. Application of axiomatic set theory to the theory of extensions of modules. Izvestiâ vysših učebnyh zavedenij. Matematika, no. 2 (1987), pp. 62-69. http://geodesic.mathdoc.fr/item/IVM_1987_2_a9/