Simmons, G. F. (2012). Differential equations with applications and historical notes (2nd ed.). Tata macGraw hill.
Παραπομπή Chicago StyleSimmons, George F. Differential Equations with Applications and Historical Notes. 2nd ed. New Delhi: Tata macGraw hill, 2012.
Παραπομπή MLASimmons, George F. Differential Equations with Applications and Historical Notes. 2nd ed. Tata macGraw hill, 2012.
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