Rotimi-Williams, B. “Monitoring Cattle Grazing Behavior and Intrusion Using Global Positioning System and Virtual Fencing: Monitoring Cattle Grazing Behavior and Intrusion Using Global Positioning System and Virtual Fencing”. Asian Journal of Mathematical Sciences(AJMS), vol. 3, no. 4, Jan. 2020, http://www.ajms.in/index.php/ajms/article/view/235.