ENGBERG, Uffe. True concurrency can be traced. DAIMI Report Series, [S. l.], v. 19, n. 308, 1990. DOI: 10.7146/dpb.v19i308.6558. Disponível em: https://tidsskrift.dk/daimipb/article/view/6558. Acesso em: 11 dec. 2025.