@article{DE_2006_42_5_a9,
     author = {A. A. Bobodzhanov and V. F. Safonov},
     title = {Equations with an unstable spectral value of the kernel of an integral operator and contrast structures},
     journal = {Differencialʹnye uravneni\^a},
     pages = {660--673},
     publisher = {mathdoc},
     volume = {42},
     number = {5},
     year = {2006},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DE_2006_42_5_a9/}
}