Coffman, C. V., & Fix, G. J. (1979). Constructive approaches to mathematical models: : proceedings of a conference in honor of R. J. Duffin, Pittsburgh, PA, 10-14 July, 1978. New York: Academic Press.
Παραπομπή Chicago StyleCoffman, C. V., and George J. Fix. Constructive Approaches to Mathematical Models: : Proceedings of a Conference in Honor of R. J. Duffin, Pittsburgh, PA, 10-14 July, 1978. New York: Academic Press, 1979.
Παραπομπή MLACoffman, C. V., and George J. Fix. Constructive Approaches to Mathematical Models: : Proceedings of a Conference in Honor of R. J. Duffin, Pittsburgh, PA, 10-14 July, 1978. New York: Academic Press, 1979.
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