HO, Richmond Chris Chee Leong; ZULKIPLI, Muhammad; SHAARI, Muhammad Farid. Design of a Low Cost Coin Acceptor for Vending Machine. Progress in Engineering Application and Technology, [S. l.], v. 2, n. 1, p. 743–752, 2021. Disponível em: https://publisher.uthm.edu.my/periodicals/index.php/peat/article/view/839. Acesso em: 7 apr. 2026.