@article{IVM_1982_5_a4,
     author = {P. D. Kruming},
     title = {Homological and cohomological characteristics of generalized periodic semigroups},
     journal = {Izvesti\^a vys\v{s}ih u\v{c}ebnyh zavedenij. Matematika},
     pages = {30--34},
     year = {1982},
     number = {5},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/IVM_1982_5_a4/}
}