KOPROWSKI, Przemysław. Witt equivalence of rings of regular functions. Annales Mathematicae Silesianae, [S. l.], v. 22, p. 45–57, 2008. Disponível em: https://journals.us.edu.pl/index.php/AMSIL/article/view/14051. Acesso em: 5 dec. 2025.