@article{ZNSL_1969_14_a7,
     author = {A. P. Oskolkov},
     title = {On certain classes of non-uniformly elliptic quasilinear equations},
     journal = {Zapiski Nauchnykh Seminarov POMI},
     pages = {156--172},
     publisher = {mathdoc},
     volume = {14},
     year = {1969},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/ZNSL_1969_14_a7/}
}