@article{AL_2016_55_4_a9,
     author = {A. V. Vasil'ev and S. V. Skresanov},
     title = {On {L.\,G.Kov\`acs'} problem},
     journal = {Algebra i logika},
     pages = {512--518},
     publisher = {mathdoc},
     volume = {55},
     number = {4},
     year = {2016},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/AL_2016_55_4_a9/}
}