BÖKSTEDT, Marcel; VAGNER, Soren. Manifolds with a special type of conelike singularities. Mathematica Scandinavica, Berkeley, CA, United States, v. 53, p. 63–87, 1983. DOI: 10.7146/math.scand.a-12017. Disponível em: https://journals.msp.org/mscand/article/view/1653. Acesso em: 25 jul. 2026.