@article{IVM_1992_8_a7,
     author = {S. V. Rychkov},
     title = {On direct decompositions of modules},
     journal = {Izvesti\^a vys\v{s}ih u\v{c}ebnyh zavedenij. Matematika},
     pages = {52--56},
     year = {1992},
     number = {8},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/IVM_1992_8_a7/}
}