Dias, J., Nande, P., Barata, N. & Correia, A. (2006). O.G.R.E.: Open Gestures Recognition Engine, a platform for gesture-based communication and interaction. In Sylvie Gibet, Nicolas Courty, Jean-François Kamp (Ed.), GW 2005: Gesture in human-computer interaction and simulation, Conference proceedings (pp. 129?132). Springer. https://doi.org/10.1007/11678816_15