@article{1183525357, author = {Serrin, James}, title = {A Harnack inequality for nonlinear equations}, journal = {Bull. Amer. Math. Soc.}, volume = {69}, number = {4}, year = {1963}, pages = { 481-486}, language = {en}, url = {http://dml.mathdoc.fr/item/1183525357} }
Serrin, James. A Harnack inequality for nonlinear equations. Bull. Amer. Math. Soc., Tome 69 (1963) no. 4, pp. 481-486. http://gdmltest.u-ga.fr/item/1183525357/