On the asymptotic solution of two first order linear differential equations with large parameter

MR0264176 Stenger, Frank Frank STENGER On the asymptotic solution of two first order linear differential equations with large parameter Funkcialaj Ekvacioj. Serio Internacia 13 1970 1--18 http://fe.math.kobe-u.ac.jp/FE/Free/vol13/fe13-1.pdf http://fe.math.kobe-u.ac.jp/FE/FE_pdf_with_bookmark/FE11-20-en_KML/fe13-001-018/fe13-001-018.pdf http://www.ams.org/mathscinet-getitem?mr=MR0264176 fe13-001-018 1970 On the Asymptotic Solution of Two First Order Linear Differential Equations with Large Parameter STENGER, Frank STENGER, Frank

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