shebl, Mohamed, Mohamed El-Tokhey, Tamer Fathy, Yasser Mogahed, and Mohamed El-Habiby. “Distance Measurement Using Proximity Sensor in Pedestrian and Bicycle Navigation”. International Journal of Engineering & Technology 7, no. 4 (December 29, 2018): 4266–4270. Accessed May 7, 2024. https://www.sciencepubco.com/index.php/ijet/article/view/15999.