BJÖRN, J. Regularity at infinity for a mixed problem for degenerate elliptic operators in a half-cylinder. MATHEMATICA SCANDINAVICA, [S. l.], v. 81, p. 101–126, 1997. DOI: 10.7146/math.scand.a-12868. Disponível em: https://www.mscand.dk/article/view/12868. Acesso em: 27 apr. 2024.