Cai , V. A. D., Ung , T. C., Nguyen, X. H., Nguyen, T. S., Le, N. H., Thach , T. B. N., Dao , V. H., Mai , Q. D. and Tran, V. P. (2019) “Design of pedal power phone charging station”, Journal of Technical Education Science, 14(4), pp. 23–31. Available at: https://www.jte.edu.vn/index.php/jte/article/view/202 (Accessed: 7 April 2026).