@article{DE_2004_40_10_a18,
     author = {A. N. Zarubin},
     title = {A boundary value problem with an involutive shift in the boundary condition},
     journal = {Differencialʹnye uravneni\^a},
     pages = {1423--1425},
     publisher = {mathdoc},
     volume = {40},
     number = {10},
     year = {2004},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DE_2004_40_10_a18/}
}