1. Benoit, P. and others (1992) (Eds.): Histoire de fractions, fractions d'histoire.—Basel: Birkhäuser
2. Bostock, D. (1974, 1979). logic and Arithmetic. 2 vols—Oxford: Clarendon Press
3. Cajori, F. (1928): A History of Mathematical Notations, Vol. 1.—La Salle, Ill.: Open Court [Extensive survey of symbols for numbers and operations]
4. Cohen, H.F. (1984): Quantifying Music. The Science of Music at the First Stage of the Scientific Revolution, 1580–1650.—Dordrecht: Reidel
5. Crossley, J. N. (1980): The Emergence of Number.—Steel's Creek: Upside Down A Book Company [A refreshing survey of the development of numbers, including complex numbers]