@article{DAN_1977_236_5_a2,
     author = {A. Dzhuraev},
     title = {On boundary value problems for some multidimensional systems of partial differential equations of first order},
     journal = {Doklady Akademii Nauk},
     pages = {1049--1052},
     publisher = {mathdoc},
     volume = {236},
     number = {5},
     year = {1977},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1977_236_5_a2/}
}