SITARZ, A. 31Lectures on Noncommutative Geometry. Acta Polytechnica, Prague, Czech Republic, v. 48, n. 2, 2008. DOI: 10.14311/961. Disponível em: https://ojs.cvut.cz/ojs/index.php/ap/article/view/961. Acesso em: 1 feb. 2025.