TY  - JOUR
AU  - G.D. Birkhoff
TI  - Equivalent Singular Points of Ordinary Linear Differential Equations
JO  - Mathematische Annalen
PY  - 1913
SP  - 134
EP  - 139
VL  - 74
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/MAN_1913__74_158624/
ID  - MAN_1913__74_158624
ER  -