MR0243171
Sibuya, Yasutaka
null
Perturbation of linear ordinary differential equations at irregular singular points
Funkcialaj Ekvacioj. Serio Internacia
11
1968
235--246 (1969)
http://fe.math.kobe-u.ac.jp/FE/FullPapers/vol11/fe11-18.pdf
http://fe.math.kobe-u.ac.jp/FE/FE_pdf_with_bookmark/FE11-20-en_KML/fe11-235-246/fe11-235-246.pdf
http://www.ams.org/mathscinet-getitem?mr=MR0243171
fe11-235-246
1968
Perturbation of Linear Ordinary Differential Equations at Irregular Singular Points
SIBUYA, Yasutaka
SIBUYA, Yasutaka
1
Hsieh, P. F.; Sibuya, Y.
Note on regular perturbations on linear ordinary differential equations at irregular singular points
Funkcialaj Ekvacioj
8
1966
99-108
MR0203182
92
Cache/Hs/Hsieh,perturbations,Funkcialaj*,1966,1967
2
Sibuya, Y.
Simplification of a system of linear ordinary differential equations about a singular point
Funkcialaj Ekvacioj
4
1962
29-56
MR0152719
100
Cache/Si/Sibuya,Simplification,Funkcialaj*,1962,1963
3
Wasow, W.
Asymptotic expansions for ordinary differential equations
Interscience, New York
1965
Data is not found in MathSci.
Cache/Wa/Wasow,Asymptotic,Interscience,*,1965,1966