BERGSTRA, J. A. An Opinion on Promises, Threats, and Accusations In the 2022 Russo-Ukrainian War. Transmathematica, [S. l.], 2022. DOI: 10.36285/tm.73. Disponível em: https://transmathematica.org/index.php/journal/article/view/73. Acesso em: 29 jan. 2023.