Gómez, C., J. V. Pichardo, M. Escudero, and G. Jiménez-Ridruejo. 1991. “Parametric Control of Saccadic Eye Movements Demonstrated by Principal Component Analysis”. Psicothema 3 (Número 2):337-48. https://reunido.uniovi.es/index.php/PST/article/view/7087.