KLARLUND, N.; SCHWARTZBACH, M. I. Graphs and Decidable Transductions based on Edge Constraints. BRICS Report Series, [S. l.], v. 1, n. 4, 1994. DOI: 10.7146/brics.v1i4.21666. Disponível em: https://tidsskrift.dk/brics/article/view/21666. Acesso em: 5 may. 2024.