Owusu, D. K. ., 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), vol. 6, no. 2, Oct. 2023, doi:10.54554/ijeeas.2023.6.02.001.