@article{ADM_2018_26_1_a4,
     author = {Sergey V. Gusev and Dmitry V. Skokov and Boris M. Vernikov},
     title = {Cancellable elements of the lattice of~semigroup~varieties},
     journal = {Algebra and discrete mathematics},
     pages = {34--46},
     publisher = {mathdoc},
     volume = {26},
     number = {1},
     year = {2018},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/ADM_2018_26_1_a4/}
}