@article{IVM_2009_3_a0,
     author = {L. N. Shevrin and B. M. Vernikov and M. V. Volkov},
     title = {Lattices of semigroup varieties},
     journal = {Izvesti\^a vys\v{s}ih u\v{c}ebnyh zavedenij. Matematika},
     pages = {3--36},
     publisher = {mathdoc},
     number = {3},
     year = {2009},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/IVM_2009_3_a0/}
}