IDRIS, M. D. F. B.; ESA, M. F. . Design, Analysis and Optimization Using Solidwork Simulation of Chair Ladder. Progress in Engineering Application and Technology, [S. l.], v. 2, n. 2, p. 947–957, 2021. Disponível em: https://publisher.uthm.edu.my/periodicals/index.php/peat/article/view/946. Acesso em: 28 jun. 2022.