KOHLENBACH, U.; OLIVA, P. B. Proof Mining: A Systematic Way of Analysing Proofs in Mathematics. BRICS Report Series, [S. l.], v. 9, n. 31, 2002. DOI: 10.7146/brics.v9i31.21746. Disponível em: https://tidsskrift.dk/brics/article/view/21746. Acesso em: 4 may. 2024.