Asymptotic simplification of linear Hamiltonian differential equations with a parameter

MR0450720 Wasow, Wolfgang Wolfgang WASOW Asymptotic simplification of linear Hamiltonian differential equations with a parameter Funkcialaj Ekvacioj. Serio Internacia 18 1975 257--270 http://fe.math.kobe-u.ac.jp/FE/Free/vol18/fe18-3-6.pdf http://fe.math.kobe-u.ac.jp/FE/FE_pdf_with_bookmark/FE11-20-en_KML/fe18-257-270/fe18-257-270.pdf http://www.ams.org/mathscinet-getitem?mr=MR0450720 fe18-257-270 1975 Asymptotic Simplification of Linear Hamiltonian Differential Equations with a Parameter WASOW, Wolfgang WASOW, Wolfgang

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