@article{DE_1988_24_10_a9,
     author = {V. P. Serebryakov},
     title = {The number of solutions with integrable square of a system of differential equations of {Sturm{\textendash}Liouville} type},
     journal = {Differencialʹnye uravneni\^a},
     pages = {1732--1738},
     year = {1988},
     volume = {24},
     number = {10},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DE_1988_24_10_a9/}
}