@article{DAN_1982_262_6_a12,
     author = {V. P. Shatskii},
     title = {On some first order degenerate systems in domains with characteristic part of the boundary},
     journal = {Doklady Akademii Nauk},
     pages = {1332--1335},
     publisher = {mathdoc},
     volume = {262},
     number = {6},
     year = {1982},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1982_262_6_a12/}
}