Nganvongpanit, K., S. Kongsawasdi, B. Chuatrakoon, and T. Yano. “Heart Rate Change During Aquatic Exercise in Small, Medium and Large Healthy Dogs”. The Thai Journal of Veterinary Medicine, vol. 41, no. 4, June 2013, pp. 455-62, https://he01.tci-thaijo.org/index.php/tjvm/article/view/9621.