@article{FAA_1972_6_2_a5,
     author = {A. N. Kuznetsov},
     title = {Differentiable solutions to degenerate systems of ordinary equations},
     journal = {Funkcionalʹnyj analiz i ego prilo\v{z}eni\^a},
     pages = {41--51},
     publisher = {mathdoc},
     volume = {6},
     number = {2},
     year = {1972},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/FAA_1972_6_2_a5/}
}