@article{DAN_1972_207_1_a2,
     author = {G. A. Gurevich},
     title = {On the conjugacy problem for groups with one defining relation},
     journal = {Doklady Akademii Nauk},
     pages = {18--20},
     publisher = {mathdoc},
     volume = {207},
     number = {1},
     year = {1972},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1972_207_1_a2/}
}