@article{DAN_1960_132_1_a15,
     author = {{\CYRA}. {\CYRA}. Sharshanov},
     title = {Systems of ordinary differential equations with explicit periodic dependence on the argument},
     journal = {Doklady Akademii Nauk},
     pages = {67--70},
     publisher = {mathdoc},
     volume = {132},
     number = {1},
     year = {1960},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1960_132_1_a15/}
}