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REFERENCES:



GERDES, P. (1989), Reconstruction and extension of lost symmetries: examples from the Tamil of South India, Computers and Mathematics with Applications, Vol. 17, No. 4-6, 791-813.

GERDES, P. (1990), On ethnomathematical research and symmetry, Symmetry: Culture and Science, Vol.1, No.2, 154-170.

GERDES, P. (1993-94), Geometria Sona: Reflexões sobre uma tradição de desenho em povos da África ao Sul do Equador, Maputo: Universidade Pedagógica, Vol.1: 200 pp., Vol.2: 169 pp., Vol. 3: 123 pp.;
French trans., Une tradition géométrique en Afrique - Les dessins sur le sable, 3 vols., Paris: L'Harmattan, 1995, 594 pp.;
German transl., Sona Geometrie: Reflektionen über eine Sandzeichentradition im südlichen Zentralafrika, Mannheim: BI Wissenschaftsverlag, 1996, 433 pp. (forthcoming);
English trans., Sona geometry: Reflections on the tradition of sand drawings in Africa South of the Equator, Maputo: Universidade Pedagógica, 1995, Vol. 1, 200 pp.

GERDES, P. (1995), Extensions of a reconstructed Tamil ring-pattern, In: Pickover, C., ed., The Pattern Book: Fractals, Art, and Nature, Singapore: World Scientific, 377-379.

JABLAN, S. (1995), Mirror generated curves, Symmetry: Culture and Science, Vol.6, No.2, 275-278 (see also Mirror Curves).

LAUWERIER, H. (1991), Fractals, images of chaos, London, Penguin Books, 209 pp.

WASHBURN, D. & CROWE, D. (1988), Symmetries of Culture. Theory and Practice of Plane Pattern Analysis, Seattle: University of Washington Press, 299 pp.



Received: 19.01.1999