@article{RM_1961_16_1_a1,
     author = {O. A. Ladyzhenskaya and N. N. Ural'tseva},
     title = {Quasi-linear elliptic equations and variational problems with many independent variables},
     journal = {Trudy Matematicheskogo Instituta imeni V.A. Steklova},
     pages = {17--91},
     publisher = {mathdoc},
     volume = {16},
     number = {1},
     year = {1961},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/RM_1961_16_1_a1/}
}