@article{CHEB_2013_14_3_a2,
     author = {V. N. Bezverkhniy and A. E. Ustyan},
     title = {Generalizations of theorems of {Magnus} and {Greendlinger}},
     journal = {\v{C}eby\v{s}evskij sbornik},
     pages = {20--33},
     publisher = {mathdoc},
     volume = {14},
     number = {3},
     year = {2013},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/CHEB_2013_14_3_a2/}
}