@article{IIGUM_2011_4_3_a9,
     author = {A. G. Pinus},
     title = {Implicit $\overline{\mathcal{K}}$-varieties},
     journal = {The Bulletin of Irkutsk State University. Series Mathematics},
     pages = {110--115},
     publisher = {mathdoc},
     volume = {4},
     number = {3},
     year = {2011},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/IIGUM_2011_4_3_a9/}
}