1. Alibali, M. W. (2005). Gesture in spatial cognition: Expressing, communicating, and thinking about spatial information. Spatial Cognition and Computation, 5(4), 307–331. doi: 10.1207/s15427633scc0504_2 .
2. Alibali, M. W., Boncoddo, R., & Hostetter, A. B. (2014). Gesture in reasoning: An embodied perspective. In L. Shapiro (Ed.), The routledge handbook of embodied cognition. New York: Routledge.
3. Arzarello, F. (2006). Semiosis as a multimodal process. RELIME, Especial, 267–299.
4. Arzarello, F. (2008). Mathematical landscapes and their inhabitants: Perceptions, languages, theories. In E. Emborg & M. Niss (Eds.), Proceedings of the 10th international congress of mathematical education (pp. 158–181). Copenhagen: ICMI.
5. Arzarello, F., Paola, D., Robutti, O., & Sabena, C. (2009). Gestures as semiotic resources in the mathematics classroom. Educational Studies in Mathematics, 70(2), 97–109. doi: 10.1007/s10649-008-9163-z .