@article{MZM_1993_53_2_a9,
     author = {Yu. M. Movsisyan},
     title = {On a~theorem of {Schauffler}},
     journal = {Matemati\v{c}eskie zametki},
     pages = {84--93},
     publisher = {mathdoc},
     volume = {53},
     number = {2},
     year = {1993},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/MZM_1993_53_2_a9/}
}