RENZ, P. L. The Contractibility of the Homeomorphism Group of Some Product Spaces by Wong’s Method. MATHEMATICA SCANDINAVICA, [S. l.], v. 28, p. 182–188, 1971. DOI: 10.7146/math.scand.a-11014. Disponível em: https://www.mscand.dk/article/view/11014. Acesso em: 5 may. 2024.