FOLDABLE BED DESIGN CONCEPT FOR COVID-19 PATIENT: A MACHINE DESIGN CASE STUDY. ASEAN Journal of Science and Engineering, [S. l.], v. 1, n. 2, p. 113–126, 2024. Disponível em: https://ejournal.kjpupi.id/index.php/ajse/article/view/263.. Acesso em: 16 aug. 2025.