UTOMO, Christiono. Support System Model for Value based Group Decision on Roof System Selection. IPTEK The Journal for Technology and Science, [S. l.], v. 22, n. 1, p. 7–18, 2025. Disponível em: https://journal.its.ac.id/index.php/jts/article/view/5670. Acesso em: 30 jan. 2026.