Salthe, S. N. (1985). Evolving hierarchical systems: Their structure and representation. New York: Columbia University Press.
Παραπομπή Chicago StyleSalthe, Stanley N. Evolving Hierarchical Systems: Their Structure and Representation. New York: Columbia University Press, 1985.
Παραπομπή MLASalthe, Stanley N. Evolving Hierarchical Systems: Their Structure and Representation. New York: Columbia University Press, 1985.
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