Marwah, Omar Mohd Faizan, et al. “Airflow Behavior of Quadcopter Fertiliser Drone for Pineapple Plantation by Using CFD”. Journal of Complex Flow, vol. 4, no. 2, Aug. 2022, pp. 6-12, https://www.jcf.fazpublishing.com/index.php/jcf/article/view/50.