BADR, N. Real interpolation of Sobolev spaces. MATHEMATICA SCANDINAVICA, [S. l.], v. 105, n. 2, p. 235–264, 2009. DOI: 10.7146/math.scand.a-15117. Disponível em: https://www.mscand.dk/article/view/15117. Acesso em: 3 may. 2024.