@article{AL_2011_50_4_a4,
     author = {A. V. Kartashova},
     title = {Antivarieties of unars},
     journal = {Algebra i logika},
     pages = {521--532},
     publisher = {mathdoc},
     volume = {50},
     number = {4},
     year = {2011},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/AL_2011_50_4_a4/}
}