STØVRING, K. Higher-Order Beta Matching with Solutions in Long Beta-Eta Normal Form. BRICS Report Series, [S. l.], v. 13, n. 12, 2006. DOI: 10.7146/brics.v13i12.21917. Disponível em: https://tidsskrift.dk/brics/article/view/21917. Acesso em: 1 may. 2024.