@article{DAN_1983_268_4_a8,
     author = {Yu. I. Ozhigov},
     title = {Equations with two unknowns in a free group},
     journal = {Doklady Akademii Nauk},
     pages = {809--813},
     year = {1983},
     volume = {268},
     number = {4},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1983_268_4_a8/}
}