1. Arzarello F.: 2000, ‘Inside and Outside: Spaces, Times and Language in Proof Production’, in:Proceedings of PME XXIV, Hiroshima, Japan,1, 23–38.
2. Arzarello, F.: 2001,Dragging, perceiving and measuring physical practices and theoretical exactness in Cabri-environments. Proc. Cabriworld 2, Montreal, Plenary Lecture.
3. Arzarello, F., Gallino, G., Micheletti, C., Olivero, F., Paola, D. & Robutti, O.: 1998, Dragging in Cabri and modalities of transition from conjectures to proofs in geometry,Proceedings of PME XXII, Stellenbosh, South Africa, v. 2, 32–39.
4. Arzarello, F., Andriano, V., Olivero, F., & Robutti, O.: 2000, ‘Abduction and conjecturing in mathematics’Philosophica, 1998, 1,61, 77–94.
5. Bartolini Bussi, M., Boero, P., Ferri, F., Garuti, R., & Mariotti, M.A.: 1997, Approaching geometry theorems in contexts: from history and epistemology to cognition.Proceedings of PMEXXI, Lathi, v. 1, 180–195.