@article{DE_2004_40_9_a4,
     author = {P. P. Zabreiko and N. I. Shirokanova},
     title = {New existence theorems for {Lyapunov{\textendash}Schmidt} integral equations},
     journal = {Differencialʹnye uravneni\^a},
     pages = {1198--1207},
     year = {2004},
     volume = {40},
     number = {9},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DE_2004_40_9_a4/}
}