Psycharis, G., & Kalogeria, E. (2013). Studying trainee teacher educators’ documentational work in technology enhanced mathematics. In A. M. Lindmeier & Heinze, A. (Eds.), Proceedings of the 37th Conference of the International Group for the Psychology of Mathematics Education (PME 37) (Vol. 4, pp. 65-72). Kiel, Germany: PME.