Feshchenko, S. F. (1967). Asymptotic methods in the theory of linear differential equations.
Chicago Edition CitationFeshchenko, S F. Asymptotic Methods in the Theory of Linear Differential Equations. American Elsevier Publishing Co., New York, 1967.
MLA Edition CitationFeshchenko, S F. Asymptotic Methods in the Theory of Linear Differential Equations. 1967.
Warning: These citations may not always be 100% accurate.