@article{ZNSL_1979_84_a17,
     author = {I. V. Skrypnik},
     title = {Solvability of boundary-value problems for non-divergent nonlinear elliptic equations},
     journal = {Zapiski Nauchnykh Seminarov POMI},
     pages = {243--251},
     publisher = {mathdoc},
     volume = {84},
     year = {1979},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/ZNSL_1979_84_a17/}
}