Author,Title,Journal,ISSN,Publisher,Date,Volume,Number,Page,URL,URL(DOI)
Klares B,Irregular Singular Point of a Linear Differential System : Dependence on the Initial Matrices,Kumamoto journal of mathematics,0914675X,Kumamoto University,1991-03,4,,11-19,https://cir.nii.ac.jp/crid/1570572701945312768,