1. Ayer, A. J. (1974). El azar [Chance]. In M. Kline (Ed.), Matemáticas en el mundo moderno (pp. 171–172). Barcelona: Blume.
2. Azcárate, P., Cardeñoso, J. M., & Porlánd, R. (1998). Concepciones de futuros profesores de educación primaria sobre la noción de aleatoriedad [Prospective primary school teachers’ conceptions on the notion of randomness]. Enseñanza de las Ciencias, 16(1), 85–97.
3. Ball, D. L., Lubienski, S. T., & Mewborn, D. S. (2001). Research on teaching mathematics: the unsolved problem of teachers’ mathematical knowledge. In V. Richardson (Ed.), Handbook of research on teaching (pp. 433–456). Washington: American Educational Research Association.
4. Bar-Hillel, M., & Wagenaar, W. A. (1991). The perception of randomness. Advances in Applied Mathematics, 12, 428–454.
5. Batanero, C., Arteaga, P., & Ruiz, B. (2010). Statistical graphs produced by prospective teachers in comparing two distributions. In V. Durand-Guerrier, S. Soury-Lavergne, & F. Arzarello (Eds.), Proceedings of the sixth European conference of research in mathematics education, CERME-6 conference. Lyon: ERME. Online: www.inrp.fr/editions/editions-electroniques/cerme6/ .