@article{01606172, title = {Multiplicity of positive solutions to semilinear elliptic boundary value problems.}, journal = {Abstract and Applied Analysis}, volume = {4}, year = {1999}, pages = {195-208}, doi = {10.1155/S1085337599000147}, zbl = {0987.35060}, language = {en}, url = {http://dml.mathdoc.fr/item/01606172} }
Umezu, Kenichiro. Multiplicity of positive solutions to semilinear elliptic boundary value problems.. Abstract and Applied Analysis, Tome 4 (1999) pp. 195-208. doi : 10.1155/S1085337599000147. http://gdmltest.u-ga.fr/item/01606172/