experts in the field and edited by Roshdi Rashed in collaboration with RégisMorelon. Volume one covers "Astronomy—Theoretical and applied". Volume two covers
Marie-Thérèse Debarnot (1996). "Trigonometry". In Rushdī Rāshid, RégisMorelon (ed.). Encyclopedia of the history of Arabic science, Volume 2. Routledge
Rosenfeld & Adolf P. Youschkevitch, "Geometry", p. 470, in Roshdi Rashed & RégisMorelon (1996), Encyclopedia of the History of Arabic Science, vol. 2, pp. 447–494
Encyclopedia of the history of Arabic science, eds. Roshdi Rashed and RégisMorelon, London: Routledge, 1996, vol. 3, ISBN 0-415-12412-3. Weekley, Ernest
and Adolf P Youschkevitch (1996), Geometry, p. 439 in Roshdi Rashed, RégisMorelon (1996), Encyclopedia of the history of Arabic science, Routledge, ISBN 0-415-12411-5