ALEXANDROV, B. On weak holonomy. MATHEMATICA SCANDINAVICA, [S. l.], v. 96, n. 2, p. 169–189, 2005. DOI: 10.7146/math.scand.a-14951. Disponível em: https://www.mscand.dk/article/view/14951. Acesso em: 11 apr. 2025.