Shaheen, H., V. Soniya, C. G. N. Durga, and K. Vinitha. “Wireless Sensing Element Network-Based Pet Location Observation System for Domestic Situations”. International Journal of Recent Advances in Science and Technology, vol. 5, no. 3, Sept. 2018, pp. 41-48, https://ijrast.com/index.php/ijrast/article/view/12.