@article{AL_1967_6_3_a8,
     author = {A. I. Omarov},
     title = {On reduced direct products},
     journal = {Algebra i logika},
     pages = {77--89},
     publisher = {mathdoc},
     volume = {6},
     number = {3},
     year = {1967},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/AL_1967_6_3_a8/}
}