@article{DAN_1972_203_4_a9,
     author = {Yu. A. Pykh},
     title = {On stability of a class of systems of nonlinear differential equations},
     journal = {Doklady Akademii Nauk},
     pages = {766--768},
     publisher = {mathdoc},
     volume = {203},
     number = {4},
     year = {1972},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1972_203_4_a9/}
}