@article{AL_2015_54_4_a5,
     author = {E. I. Timoshenko},
     title = {Endomorphisms of free solvable groups preserving primitivity of systems of elements},
     journal = {Algebra i logika},
     pages = {503--519},
     publisher = {mathdoc},
     volume = {54},
     number = {4},
     year = {2015},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/AL_2015_54_4_a5/}
}