@article{ZNSL_1981_112_a6,
     author = {A. V. Ivanov},
     title = {$(A,\vec0)$-elliptic equations with a~weak degeneracy},
     journal = {Zapiski Nauchnykh Seminarov POMI},
     pages = {75--84},
     publisher = {mathdoc},
     volume = {112},
     year = {1981},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/ZNSL_1981_112_a6/}
}