Caffaro, F., C. Bisaglia, M. Cutini, M. Micheletti Cremasco, and E. Cavallo. “A Method to Evaluate the Perceived Ease of Use of Human-Machine Interface in Agricultural Tractors Equipped With Continuously Variable Transmission (CVT)”. Spanish Journal of Agricultural Research, Vol. 15, no. 4, Dec. 2017, p. e0210, doi:10.5424/sjar/2017154-10726.