@article{DE_1999_35_10_a9,
     author = {\`E. Muhamadiev and A. Naimov},
     title = {On the theory of two-point boundary value problems for second-order differential equations},
     journal = {Differencialʹnye uravneni\^a},
     pages = {1372--1381},
     publisher = {mathdoc},
     volume = {35},
     number = {10},
     year = {1999},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DE_1999_35_10_a9/}
}