ALSTRUP, S.; HUSFELDT, T.; RAUHE, T. Marked Ancestor Problems. BRICS Report Series, [S. l.], v. 5, n. 16, 1998. DOI: 10.7146/brics.v5i16.21956. Disponível em: https://tidsskrift.dk/brics/article/view/21956. Acesso em: 22 nov. 2024.