1. Boyer, C. B. (1959) The History of the Calculus and its Conceptual Development, Dover Publications, New York.
2. Cajori, F. (1991) A History of Mathematics, 5th edn, Chelsea Publishing Co., New York.
3. Feyerabend, P. (1975) Against Method, Verso, London.
4. Hacking, I. (1983) Representing and Intervening, Cambridge University Press, Cambridge.
5. Priest, G. and Routley, R. (1989) Applications of paraconsistent logic, Ch. 13 of Priest, Routley and Norman (1989).