COX, D. A. Algebraic tubular neighbourhoods II. MATHEMATICA SCANDINAVICA, [S. l.], v. 42, p. 229–242, 1978. DOI: 10.7146/math.scand.a-11750. Disponível em: https://www.mscand.dk/article/view/11750. Acesso em: 27 nov. 2024.