SCHWARTZBACH, Michael I.; SCHMIDT, Erik Meineche. Types and automata. DAIMI Report Series, [S. l.], v. 19, n. 316, 1990. DOI: 10.7146/dpb.v19i316.6706. Disponível em: https://tidsskrift.dk/daimipb/article/view/6706. Acesso em: 11 dec. 2025.