@article{AL_1981_20_3_a4,
     author = {N. S. Chernikov},
     title = {On the product of groups of finite rank},
     journal = {Algebra i logika},
     pages = {315--329},
     publisher = {mathdoc},
     volume = {20},
     number = {3},
     year = {1981},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/AL_1981_20_3_a4/}
}