@article{IVM_1989_8_a7,
     author = {A. G. Sokolskiǐ},
     title = {Semigroup rings of semilattices of groups},
     journal = {Izvesti\^a vys\v{s}ih u\v{c}ebnyh zavedenij. Matematika},
     pages = {53--55},
     year = {1989},
     number = {8},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/IVM_1989_8_a7/}
}