Owusu, Daniel Kumi, P. K. Otchere, and W. Opare. “Design and Implementation of Remote-Controlled Lawn Mower Using Dual-Tone Multi-Frequency Technology”. International Journal of Electrical Engineering and Applied Sciences (IJEEAS) 6, no. 2 (October 30, 2023). Accessed October 18, 2024. https://ijeeas.utem.edu.my/ijeeas/article/view/6146.