Feshchenko, S. F., Eagle, H., & Shkil', N. I. (1967). Asymptotic methods in the theory of linear differential equations. American Elsevier Publishing Company.
Chicago Style (17th ed.) CitationFeshchenko, S. F., Herbert Eagle, and N. I. Shkil'. Asymptotic Methods in the Theory of Linear Differential Equations. New York: American Elsevier Publishing Company, 1967.
MLA (8th ed.) CitationFeshchenko, S. F., et al. Asymptotic Methods in the Theory of Linear Differential Equations. American Elsevier Publishing Company, 1967.
Warning: These citations may not always be 100% accurate.