@article{DAN_1981_258_6_a1,
     author = {A. Dzhuraev},
     title = {On the formulation of boundary value problems for nonclassical systems},
     journal = {Doklady Akademii Nauk},
     pages = {1293--1298},
     publisher = {mathdoc},
     volume = {258},
     number = {6},
     year = {1981},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1981_258_6_a1/}
}