@article{IVM_1996_9_a1,
     author = {A. B. Verevkin},
     title = {A condition for graded freeness},
     journal = {Izvesti\^a vys\v{s}ih u\v{c}ebnyh zavedenij. Matematika},
     pages = {14--15},
     publisher = {mathdoc},
     number = {9},
     year = {1996},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/IVM_1996_9_a1/}
}