Goldberg, S. (1958). Introduction to difference equations: With illustrative examples from economics, psychology and sociology. New York: John Wiley & Sons.
Παραπομπή Chicago StyleGoldberg, Samuel. Introduction to Difference Equations: With Illustrative Examples From Economics, Psychology and Sociology. New York: John Wiley & Sons, 1958.
Παραπομπή MLAGoldberg, Samuel. Introduction to Difference Equations: With Illustrative Examples From Economics, Psychology and Sociology. New York: John Wiley & Sons, 1958.
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