@article{IVM_2011_7_a1,
     author = {B. M. Vernikov},
     title = {Codistributive elements of the lattice of semigroup varieties},
     journal = {Izvesti\^a vys\v{s}ih u\v{c}ebnyh zavedenij. Matematika},
     pages = {13--21},
     publisher = {mathdoc},
     number = {7},
     year = {2011},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/IVM_2011_7_a1/}
}