UNED interoperability software among multi vendor interactive whiteboards in a video conference system - Rodrigo, C.; Vázquez, N.; Alonso, V.; Santos, M.; Gago, D.; Vázquez, M.; Carnicero, F.; Sernández, A.; Novo, M.; García, J.; Martínez, D. (Proceedings of the 6th Iberian Conference on Information Systems and Technologies, CISTI 2011, 2011)