@article{DAN_1967_173_1_a3,
     author = {V. P. Glushko},
     title = {Degenerating elliptic equations of second order in arbitrary smooth regions},
     journal = {Doklady Akademii Nauk},
     pages = {18--21},
     publisher = {mathdoc},
     volume = {173},
     number = {1},
     year = {1967},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1967_173_1_a3/}
}