@article{1138846367, author = {Kawai, Kazumitsu and Sario, Leo}, title = {Extremal solutions of $\Delta u=Pu$}, journal = {Kodai Math. Sem. Rep.}, volume = {23}, number = {1}, year = {1971}, pages = { 276-289}, language = {en}, url = {http://dml.mathdoc.fr/item/1138846367} }
Kawai, Kazumitsu; Sario, Leo. Extremal solutions of $\Delta u=Pu$. Kodai Math. Sem. Rep., Tome 23 (1971) no. 1, pp. 276-289. http://gdmltest.u-ga.fr/item/1138846367/