@article{FAA_1973_7_2_a11,
     author = {E. A. Gutkin},
     title = {Matrices connected with groups generated by mappings},
     journal = {Funkcionalʹnyj analiz i ego prilo\v{z}eni\^a},
     pages = {81--82},
     publisher = {mathdoc},
     volume = {7},
     number = {2},
     year = {1973},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/FAA_1973_7_2_a11/}
}