@article{05237079, title = {Legendre's differential equation and its Hyers-Ulam stability.}, journal = {Abstract and Applied Analysis}, volume = {2007}, year = {2007}, doi = {10.1155/2007/56419}, zbl = {1153.34306}, language = {en}, url = {http://dml.mathdoc.fr/item/05237079} }
Jung, Soon-Mo. Legendre's differential equation and its Hyers-Ulam stability.. Abstract and Applied Analysis, Tome 2007 (2007) . doi : 10.1155/2007/56419. http://gdmltest.u-ga.fr/item/05237079/