SCHMIDT, Asmus L. Farey Simplices in the Space of Quaternions. MATHEMATICA SCANDINAVICA, [S. l.], v. 24, p. 31–65, 1969. DOI: 10.7146/math.scand.a-10919. Disponível em: https://tidsskrift.dk/math/article/view/10919. Acesso em: 14 aug. 2026.