@article{SEMR_2019_16_a2,
     author = {D. V. Skokov and B. M. Vernikov},
     title = {On modular and cancellable elements of the lattice of semigroup varieties},
     journal = {Sibirskie \`elektronnye matemati\v{c}eskie izvesti\^a},
     pages = {175--186},
     publisher = {mathdoc},
     volume = {16},
     year = {2019},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/SEMR_2019_16_a2/}
}