PageHeader : Funkcialaj Ekvacioj, 13 (1970) , 97-107 Title : Perturbations of Matrix Diff.erential Equations Title : in the Neighborhood of a Singular Point AuthorInfo : By Donald A. LUTZ AuthorInfo : (The University of Wisconsin) section : I. Introduction. section : II. Transformation to a Standard Form. section : III. Proof of the main result. section : IV. Examples. section : References