@article{DE_1998_34_2_a5,
     author = {Yu. A. Klokov},
     title = {On the {Bernstein-Nagumo} conditions in {Neumann} boundary value problems for ordinary differential equations},
     journal = {Differencialʹnye uravneni\^a},
     pages = {184--188},
     publisher = {mathdoc},
     volume = {34},
     number = {2},
     year = {1998},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DE_1998_34_2_a5/}
}