KRUMOVA, Milena; PETROV , Evgeniy. Sub-suppliers model 4.0 and knowledge discovery in industry supply chain. Smart Cities and Regional Development (SCRD) Journal, [S. l.], v. 8, n. 1, p. 119–130, 2024. DOI: 10.25019/3kxnym42. Disponível em: https://www.scrd.eu/index.php/scrd/article/view/466. Acesso em: 13 aug. 2025.