1. Artigue, M. (2002). Learning mathematics in a CAS environment: The genesis of a reflection about instrumentation and the dialectics between technical and conceptual work. International Journal of Computers for Mathematical Learning, 7, 245–274.
2. Blanton, M., Brizuela, B. M., Gardiner, A. M., Sawrey, K., & Newman-Owens, A. (2015). A learning trajectory in six-year-olds’ thinking about generalizing functional relationships. Journal for Research in Mathematics Education, 46, 511–558.
3. Blanton, M., Stephens, A., Knuth, E., Gardiner, A. M., Isler, I., & Kim, J.-S. (2015). The development of children’s algebraic thinking: The impact of a comprehensive early algebra intervention in third grade. Journal for Research in Mathematics Education, 46, 39–87.
4. Bloedy-Vinner, H. (1994). The analgebraic mode of thinking: The case of parameter. In J. P. da Ponte & J. F. Matos (Eds.), Proceedings of the 18th Conference of the International Group for the Psychology of Mathematics Education (Vol. 2, pp. 88–95). Lisbon, Portugal: PME.
5. Bloedy-Vinner, H. (2001). Beyond unknowns and variables—Parameters and dummy variables in high school algebra. In R. Sutherland, T. Rojano, A. Bell, & R. Lins (Eds.), Perspectives on school algebra (pp. 177–189). Dordrecht, The Netherlands: Kluwer.