STROMME, S. A. A note on $\tau$-constant families of plane curves. MATHEMATICA SCANDINAVICA, [S. l.], v. 55, p. 62–66, 1984. DOI: 10.7146/math.scand.a-12067. Disponível em: https://www.mscand.dk/article/view/12067. Acesso em: 1 may. 2024.