Before 2020: article in Comparative Civilizations Review, the journal of the International Society for the Comparative Study of Civilizations (ISCSC).
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May 2002: a 5p-chapter in Gabriele Losa et al.: Fractals in Biology and Medicine, Volume III, Birkhauser Press, Basle, Switzerland, 2002, 368p, isbn 3-7643-6474-2, p.319-324. (Proceedings of the Third International Symposium on Fractals, Fractals 2000 in Biology and Medicine.)