@article{1138843578,
author = {Sugiyama, Shohei},
title = {On the singularities of the differential equation $(d^2y/dx^2)+f(x,y)(dy/dx)+g(x,y)=P(x)$},
journal = {Kodai Math. Sem. Rep.},
volume = {7},
number = {1},
year = {1955},
pages = { 23-29},
language = {en},
url = {http://dml.mathdoc.fr/item/1138843578}
}
Sugiyama, Shohei. On the singularities of the differential equation $(d^2y/dx^2)+f(x,y)(dy/dx)+g(x,y)=P(x)$. Kodai Math. Sem. Rep., Tome 7 (1955) no. 1, pp. 23-29. http://gdmltest.u-ga.fr/item/1138843578/