@article{AL_2012_51_3_a5,
     author = {N. S. Romanovskii},
     title = {Universal theories for free solvable groups},
     journal = {Algebra i logika},
     pages = {385--391},
     publisher = {mathdoc},
     volume = {51},
     number = {3},
     year = {2012},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/AL_2012_51_3_a5/}
}