@article{DE_1981_17_6_a7,
     author = {A. I. Kheifits},
     title = {Analytic properties of functions of convex relative solutions of second-order differential equations},
     journal = {Differencialʹnye uravneni\^a},
     pages = {1025--1034},
     publisher = {mathdoc},
     volume = {17},
     number = {6},
     year = {1981},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DE_1981_17_6_a7/}
}