@article{AL_2003_42_2_a6,
     author = {D. M. Smirnov},
     title = {Varieties {Defined} by {Permutations}},
     journal = {Algebra i logika},
     pages = {237--254},
     year = {2003},
     volume = {42},
     number = {2},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/AL_2003_42_2_a6/}
}