@article{ZNSL_1984_138_a6,
     author = {O. A. Ladyzhenskaya and N. N. Ural'tseva},
     title = {On estimates of $\max|u_x|$ for solutions of quasilinear elliptic and parabolic equations of the general type and on some existence theorems},
     journal = {Zapiski Nauchnykh Seminarov POMI},
     pages = {90--107},
     publisher = {mathdoc},
     volume = {138},
     year = {1984},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/ZNSL_1984_138_a6/}
}