Author,Title,Edition,Publisher,Year,Series,Number,ISBN,ISSN,URL
"Simpson, Carlos",Asymptotic behavior of monodromy : singularly perturbed differential equations on a Riemann surface,,Springer-Verlag,1991,Lecture notes in mathematics,,"3540550097,0387550097",,https://cir.nii.ac.jp/crid/1130000795972381312