ROQUES, J.; SAULOY, J. Euler characteristics and $q$-difference equations. ANNALI SCUOLA NORMALE SUPERIORE - CLASSE DI SCIENZE, [S. l.], v. 19, n. 1, p. 129-154, 2019. DOI: 10.2422/2036-2145.201601_015. Disponível em: https://journals.sns.it/index.php/annaliscienze/article/view/633. Acesso em: 20 feb. 2026.