1. Arcavi, A. (1994): Symbol Sense: Informal Sense-making in Fournal Mathematics.— In: For the Learning of Mathematics 14 (3), p. 24–35.
2. Artigue, M. (1997). Le logiciel ‘Derive’ comme révélateur de phénoméne didactiques liés à l'utilisation d'environnements informatiques pour l'apprentissage—In: Educational Studies in Mathematics 33, p. 133–169.
3. Drijvers, P. ({dy2000}): Students encountering obstacles using a CAS.— In: International Journal of Computers for Mathematical Learning, 5 (3), p. 189–209.
4. Drijvers, P. (2002): Algebra on a screen, on paper and in the mind.— In: Fey, J., Cuoco, A., Kieran, C., McMullin, L.; Zbiek, R. M. (Eds.), Computer Algebra Systems in Secondary School Mathematics Education. Reston: National Council of Teachers of Mathematics.
5. Drijvers, P., Van Herwaarden, O. (2000): Instrumentation of ICT-tools the case of algebra in a computer algebra environment.—In International Journal of Computeralgebra in Mathematics Education 7 (4), p. 255–275.