@article{SM_1982_41_2_a6, author = {S. I. Pokhozhaev}, title = {On equations of the form $\Delta u=f(x,u,Du)$}, journal = {Sbornik. Mathematics}, pages = {269--280}, publisher = {mathdoc}, volume = {41}, number = {2}, year = {1982}, language = {en}, url = {http://geodesic.mathdoc.fr/item/SM_1982_41_2_a6/} }