@article{DAN_1960_131_4_a4,
     author = {K. Kordunyanu},
     title = {On the existence of bounded solutions for some non-linear differential systems},
     journal = {Doklady Akademii Nauk},
     pages = {735--737},
     publisher = {mathdoc},
     volume = {131},
     number = {4},
     year = {1960},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1960_131_4_a4/}
}