@article{AL_1990_29_3_a4,
     author = {Zh. A. Omarov},
     title = {On the intersection of noncharacterizable varieties of},
     journal = {Algebra i logika},
     pages = {339--344},
     publisher = {mathdoc},
     volume = {29},
     number = {3},
     year = {1990},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/AL_1990_29_3_a4/}
}