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Pallejà Cabrè, Tomàs ; Rubión Soler, Edgar ; Teixidó Cairol, Mercè ; Tresánchez Ribes, Marcel ; Fernández del Viso, Alicia ; Rebate, Carlos ; Palacín Roca, Jordi. "Using the optical flow to implement a relative virtual mouse controlled by head movements". 2012. <http://hdl.handle.net/10459.1/41492>. [Consulta: 18-04-14].