@article{104754, author = {Milo\v s R\'ab}, title = {Asymptotic expansions of solutions of the equation $(p(x)y')'-q(x)y=0$ with complex-valued coefficients}, journal = {Archivum Mathematicum}, volume = {008}, year = {1972}, pages = {1-15}, zbl = {0271.34066}, mrnumber = {0315231}, language = {en}, url = {http://dml.mathdoc.fr/item/104754} }
Ráb, Miloš. Asymptotic expansions of solutions of the equation $(p(x)y')'-q(x)y=0$ with complex-valued coefficients. Archivum Mathematicum, Tome 008 (1972) pp. 1-15. http://gdmltest.u-ga.fr/item/104754/
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