1. Devlin., K. (2010). The Unfinished Game: Pascal, Fermat, and the Seventeenth-Century Letter that Made the World Modern. Ed. Humanitas, Bucharest.
2. Francis, A. (1995). Business Mathematics and Statistics, 4th edition, DP Publication Ltd.
3. Livio, M. (2010). Is God a Mathematician?, Ed. Humanitas, Bucharest.
4. Marcus, S. (1970). Poetica matematica, Ed. Academiei, Bucharest.