SOEWARDI, H.; EDHI, G. S. Inovative Design of Mattress by Using TRIZ and QFD. International Series on Interdisciplinary Science and Technology, [S. l.], v. 2, n. 1, p. 58–62, 2017. DOI: 10.23960/ins.v2i1.36. Disponível em: http://insist.unila.ac.id/index.php/ojs/article/view/36. Acesso em: 14 jul. 2025.