Caojun, H. (2015) “BeiDou-GPS integrated dual-system with multi-satellites for positioning and navigating farm vehicles”, International Journal of Agricultural and Biological Engineering, 8(5), pp. 79–85. Available at: https://www.ijabe.migration.pkpps06.publicknowledgeproject.org/index.php/ijabe/article/view/1400 (Accessed: 27 February 2026).