TIAN, Yuan. Uniform Transformation Groups on Lower Dimensional Spaces. MATHEMATICA SCANDINAVICA, [S. l.], v. 79, p. 101–129, 1996. DOI: 10.7146/math.scand.a-12595. Disponível em: https://tidsskrift.dk/math/article/view/12595. Acesso em: 14 aug. 2026.