@article{IVM_1995_1_a9,
     author = {A. V. Tishchenko and M. V. Volkov},
     title = {Characterization of varieties of semigroups of finite index in the language of ``prohibited divisors''},
     journal = {Izvesti\^a vys\v{s}ih u\v{c}ebnyh zavedenij. Matematika},
     pages = {91--99},
     publisher = {mathdoc},
     number = {1},
     year = {1995},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/IVM_1995_1_a9/}
}