@article{DAN_1964_154_3_a4,
     author = {M. Grindlinger},
     title = {Solutions of the word problem for a class of groups by {Dehn's} algorithm and of the conjugacy 
},
     journal = {Doklady Akademii Nauk},
     pages = {507--509},
     publisher = {mathdoc},
     volume = {154},
     number = {3},
     year = {1964},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1964_154_3_a4/}
}