@article{01330896, title = {Triple positive solutions for multipoint conjugate boundary value problems.}, journal = {Georgian Mathematical Journal}, volume = {6}, year = {1999}, pages = {415-420}, doi = {10.1023/A:1022920632092}, zbl = {0942.34014}, language = {en}, url = {http://dml.mathdoc.fr/item/01330896} }
Davis, John M.; Eloe, Paul W.; Henderson, Johnny. Triple positive solutions for multipoint conjugate boundary value problems.. Georgian Mathematical Journal, Tome 6 (1999) pp. 415-420. doi : 10.1023/A:1022920632092. http://gdmltest.u-ga.fr/item/01330896/