SØRENSEN, I. H. System Modelling: A methodology for describing the structure of complex Software, Firmware, and Hardware systems consisting of independent process components. DAIMI Report Series, [S. l.], v. 7, n. 87, 1978. DOI: 10.7146/dpb.v7i87.7645. Disponível em: https://tidsskrift.dk/daimipb/article/view/7645. Acesso em: 9 may. 2024.