Bellman, R. E., Cooke, K., & Cooke, K. L. (1963). Differential-difference equations. New York: Academic Press.
Παραπομπή Chicago StyleBellman, Richard Ernest, Kenneth Cooke, and Kenneth L. Cooke. Differential-difference Equations. New York: Academic Press, 1963.
Παραπομπή MLABellman, Richard Ernest, Kenneth Cooke, and Kenneth L. Cooke. Differential-difference Equations. New York: Academic Press, 1963.
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