BRAHMANA, R. R.; SAFIRIN, M. T. Smart door lock design and development using the pahl and beitz approach. International Journal of Industrial Optimization, [S. l.], v. 6, n. 2, p. 182–194, 2026. DOI: 10.12928/ijio.v6i2.12892. Disponível em: http://journal2.uad.ac.id/index.php/ijio/article/view/12892. Acesso em: 25 aug. 2026.