@article{DE_1967_3_9_a7,
     author = {B. M. Arkhipov and A. Ya. Khokhryakov},
     title = {The {Sturm{\textendash}Liouville} problem of a second order nonlinear ordinary differential equation},
     journal = {Differencialʹnye uravneni\^a},
     pages = {1484--1494},
     year = {1967},
     volume = {3},
     number = {9},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DE_1967_3_9_a7/}
}