JONES, N. D. A Note on the Complexity of General D0L Membership. DAIMI Report Series, [S. l.], v. 8, n. 93, 1979. DOI: 10.7146/dpb.v8i93.6509. Disponível em: https://tidsskrift.dk/daimipb/article/view/6509. Acesso em: 4 may. 2024.