%0 Journal Article
%A Masaaki Yoshida
%A Takeshi Sasaki
%T Linear differential Equations in Two Variables of Rank Four. I.
%J Mathematische Annalen
%D 1988
%P 69-94
%V 282
%N 2
%I mathdoc
%U http://geodesic.mathdoc.fr/item/MAN_1988__282_2_164450/
%F MAN_1988__282_2_164450