HENCL, Stanislav. On the weak differentiability of $u\circ f^{-1}$. Mathematica Scandinavica, Berkeley, CA, United States, v. 107, n. 2, p. 198–208, 2010. DOI: 10.7146/math.scand.a-15151. Disponível em: https://journals.msp.org/mscand/article/view/546. Acesso em: 24 jul. 2026.