@article{ZNSL_1972_30_a3,
     author = {A. V. Ivanov},
     title = {Local estimates of the first derivatives of the solutions of second order quasilinear elliptic equations, and their application to {Liouville} type theorems},
     journal = {Zapiski Nauchnykh Seminarov POMI},
     pages = {40--50},
     publisher = {mathdoc},
     volume = {30},
     year = {1972},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/ZNSL_1972_30_a3/}
}