CHE UMAR, C. M. I. .; ZULKAFLI, M. F. Distance and Rotational Speed Analysis of Coaxial Rotors for UTHM C-Drone. Progress in Aerospace and Aviation Technology, [S. l.], v. 1, n. 1, p. 46–55, 2021. Disponível em: https://publisher.uthm.edu.my/ojs/index.php/paat/article/view/10301. Acesso em: 26 jun. 2022.