1.
, , , . Asymptotic methods in the theory of linear differential equations. New York: American Elsevier; 1967.
, , et . Asymptotic methods in the theory of linear differential equations. New York : American Elsevier, 14 juin 1967
Feŝenko Stepan Fedorovič, Škilʹ Nikolaj Ivanovič, Nikolenko Larisa Danilovna, & Eagle Herbert. (1967). Asymptotic methods in the theory of linear differential equations. American Elsevier.
Style de citation MLA (8e éd.)Feŝenko Stepan Fedorovič, et al. Asymptotic Methods in the Theory of Linear Differential Equations. American Elsevier, 1967.
Attention : ces citations peuvent ne pas être correctes à 100%.