Kelley, W. G., & Peterson, A. C. (2001). Difference equations: An introduction with applications (2nd ed.). San Diego: Harcourt/Academic Press.
Παραπομπή Chicago StyleKelley, Walter G., and Allan C. Peterson. Difference Equations: An Introduction With Applications. 2nd ed. San Diego: Harcourt/Academic Press, 2001.
Παραπομπή MLAKelley, Walter G., and Allan C. Peterson. Difference Equations: An Introduction With Applications. 2nd ed. San Diego: Harcourt/Academic Press, 2001.
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