@article{SM_1981_39_1_a5,
     author = {N. S. Romanovskii},
     title = {On the elementary theory of an almost polycyclic group},
     journal = {Sbornik. Mathematics},
     pages = {125--132},
     year = {1981},
     volume = {39},
     number = {1},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/SM_1981_39_1_a5/}
}