Yanliang, Z., Qi, L. and Wei, Z. (2017) “Design and test of a six-rotor unmanned aerial vehicle (UAV) electrostatic spraying system for crop protection”, International Journal of Agricultural and Biological Engineering, 10(6), pp. 68–76. Available at: https://ijabe.migration.pkpps06.publicknowledgeproject.org/index.php/ijabe/article/view/3460 (Accessed: 27 February 2026).