@article{AL_2003_42_2_a1,
     author = {A. I. Budkin},
     title = {The {Lattice} of {Quasivarieties} of {Torsion-Free} {Metabelian} {Groups}},
     journal = {Algebra i logika},
     pages = {161--181},
     publisher = {mathdoc},
     volume = {42},
     number = {2},
     year = {2003},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/AL_2003_42_2_a1/}
}