HENCL, Stanislav. On the weak differentiability of $u\circ f^{-1}$. MATHEMATICA SCANDINAVICA, [S. l.], v. 107, n. 2, p. 198–208, 2010. DOI: 10.7146/math.scand.a-15151. Disponível em: https://www.mscand.dk/article/view/15151. Acesso em: 5 dec. 2025.