@article{IM2_1985_25_3_a9,
     author = {N. N. Repin},
     title = {The solvability problem for equations in one unknown in nilpotent groups},
     journal = {Izvestiya. Mathematics },
     pages = {601--618},
     publisher = {mathdoc},
     volume = {25},
     number = {3},
     year = {1985},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/IM2_1985_25_3_a9/}
}