GRACZYK, P.; FEL'DMAN, G. M. Independent Linear Statistics on Finite Abelian Groups. Ukrains’kyi Matematychnyi Zhurnal, [S. l.], v. 53, n. 4, p. 441–448, 2001. Disponível em: https://umj.imath.kiev.ua/index.php/umj/article/view/4266. Acesso em: 5 dec. 2025.