@article{DAN_1984_277_1_a2,
     author = {A. V. Bitsadze},
     title = {On the theory of nonlocal boundary value problems},
     journal = {Doklady Akademii Nauk},
     pages = {17--19},
     year = {1984},
     volume = {277},
     number = {1},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1984_277_1_a2/}
}