JENSEN, Kurt; KYNG, Morten. Petri Nets and Semantics of System Descriptions. DAIMI Report Series, [S. l.], v. 9, n. 116, 1980. DOI: 10.7146/dpb.v9i116.6534. Disponível em: https://tidsskrift.dk/daimipb/article/view/6534. Acesso em: 5 feb. 2026.