NOËL, F. . UNIVERSAL SYSTEMS AND THE INVERTIBILITY OF NORMAL FUNCTORS. Mathematical Statistician and Engineering Applications, [S. l.], v. 70, n. 2, p. 143–152, 2021. DOI: 10.17762/msea.v70i2.22. Disponível em: https://www.philstat.org/index.php/MSEA/article/view/22. Acesso em: 16 apr. 2024.