XIE, L. Comment: Paper on the progress of pure mathematics "proof of 3x + 1 conjecture". Annals of Mathematics and Physics, [S. l.], v. 7, n. 2, p. 148–149, 2024. DOI: 10.17352/amp.000117. Disponível em: https://www.peertechzpublications.us/amp/article/view/AMP-7-217. Acesso em: 10 jan. 2025.