@article{DE_1992_28_10_a1,
     author = {A. A. Boichuk and S. M. Chujko},
     title = {Autonomous weakly nonlinear boundary value problems},
     journal = {Differencialʹnye uravneni\^a},
     pages = {1668--1674},
     publisher = {mathdoc},
     volume = {28},
     number = {10},
     year = {1992},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DE_1992_28_10_a1/}
}