@article{MZM_2001_70_5_a2,
     author = {B. M. Vernikov},
     title = {Special {Elements} of the {Lattice} of {Overcommutative} {Varieties} of {Semigroups}},
     journal = {Matemati\v{c}eskie zametki},
     pages = {670--678},
     publisher = {mathdoc},
     volume = {70},
     number = {5},
     year = {2001},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/MZM_2001_70_5_a2/}
}