@article{PFMT_2015_1_a10,
     author = {M. S. Belokursky},
     title = {On coincidence of reflecting functions of the quasi-periodic and periodic differential systems},
     journal = {Problemy fiziki, matematiki i tehniki},
     pages = {58--61},
     publisher = {mathdoc},
     number = {1},
     year = {2015},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/PFMT_2015_1_a10/}
}