Calcante, Aldo, and Francesco M. Tangorra. “Measuring Oxygen Saturation and Pulse Rate in Dairy Cows before and After Machine Milking Using a Low-Cost Pulse Oximeter”. Journal of Agricultural Engineering 52, no. 2 (May 14, 2021). Accessed April 19, 2024. https://www.agroengineering.org/jae/article/view/1155.