@article{1138833574,
author = {Nakano, Minoru},
title = {Second order linear ordinary differential equations with turning points and singularities. I.},
journal = {Kodai Math. Sem. Rep.},
volume = {29},
number = {1-2},
year = {1977},
pages = { 88-102},
language = {en},
url = {http://dml.mathdoc.fr/item/1138833574}
}
Nakano, Minoru. Second order linear ordinary differential equations with turning points and singularities. I.. Kodai Math. Sem. Rep., Tome 29 (1977) no. 1-2, pp. 88-102. http://gdmltest.u-ga.fr/item/1138833574/