@article{IVM_1992_8_a2,
     author = {M. V. Volkov},
     title = {Semigroup varieties with a~modular subvariety {lattice.~III}},
     journal = {Izvesti\^a vys\v{s}ih u\v{c}ebnyh zavedenij. Matematika},
     pages = {21--29},
     publisher = {mathdoc},
     number = {8},
     year = {1992},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/IVM_1992_8_a2/}
}