@article{DAN_1966_169_1_a2,
     author = {A. Ya. Lepin and A. D. Myshkis},
     title = {Existence of solutions of a boundary value problem for an ordinary nonlinear differential equation of the $n$th order},
     journal = {Doklady Akademii Nauk},
     pages = {16--19},
     publisher = {mathdoc},
     volume = {169},
     number = {1},
     year = {1966},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1966_169_1_a2/}
}