@article{1103051406, author = {Potter, Ruth Lind}, title = {On self-adjoint differential equations of second order.}, journal = {Pacific J. Math.}, volume = {3}, number = {4}, year = {1953}, pages = { 467-491}, language = {en}, url = {http://dml.mathdoc.fr/item/1103051406} }
Potter, Ruth Lind. On self-adjoint differential equations of second order.. Pacific J. Math., Tome 3 (1953) no. 4, pp. 467-491. http://gdmltest.u-ga.fr/item/1103051406/