@article{MZM_1998_64_6_a12,
     author = {E. I. Timoshenko},
     title = {Center of some solvable groups with one defining relation},
     journal = {Matemati\v{c}eskie zametki},
     pages = {925--931},
     publisher = {mathdoc},
     volume = {64},
     number = {6},
     year = {1998},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/MZM_1998_64_6_a12/}
}