ASYMPTOTIC METHODS IN THE THEORY OF LINEAR DIFFERENTIAL EQUATIONS - Feshchenko, Stepan Fedorovich; Nikolenko, L. D. (N. Y. American Elsevier Pub. Co., 1967)
Translation Of Asimptoticheskie Metody V Teorii Lineinykh Differentsial'Nykh Uravnenii
Keywords: Differential Equations, Linear; Asymptotic Expansions