Ismail, Zakwan, and Farhana Ahmad Po'ad. “Development of Wireless Planting Robot for Sowing Seeds, Watering and Fertilizing Plantations”. Evolution in Electrical and Electronic Engineering, vol. 3, no. 1, June 2022, pp. 208-14, https://penerbit.uthm.edu.my/periodicals/index.php/eeee/article/view/6685.