MR0159064
Saito, Tosiya
Tosiya SAITO
On a singular point of a second order linear differential equation containing a parameter
Funkcialaj Ekvacioj. Serio Internacia
5
1963
1--29
http://fe.math.kobe-u.ac.jp/FE/Free/vol05/fe05-1.pdf
http://fe.math.kobe-u.ac.jp/FE/FE_pdf_with_bookmark/FE01-10-en_KML/fe05-001-029/fe05-001-029.pdf
http://www.ams.org/mathscinet-getitem?mr=MR0159064
fe05-001-029
1962
On a Singular Point of a Second Order Linear Differential Equation Containing a Parameter
SAITO, Tosiya
SAITO, Tosiya