@article{TRSPY_1973_133_a10,
     author = {G. A. Gurevich},
     title = {On the conjugacy problem for groups with a~single defining relation},
     journal = {Informatics and Automation},
     pages = {109--120},
     publisher = {mathdoc},
     volume = {133},
     year = {1973},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/TRSPY_1973_133_a10/}
}