@article{ZNSL_1968_7_a2,
     author = {A. V. Ivanov},
     title = {Local estimates of maximum modulus for the first derivatives of solutions of nonuniform quasilinear equations of elliptic type and in divergent form},
     journal = {Zapiski Nauchnykh Seminarov POMI},
     pages = {87--125},
     publisher = {mathdoc},
     volume = {7},
     year = {1968},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/ZNSL_1968_7_a2/}
}