HANSSON, Kurt. Imbedding theorems of Sobolev type in potential theory. MATHEMATICA SCANDINAVICA, [S. l.], v. 45, p. 77–102, 1979. DOI: 10.7146/math.scand.a-11827. Disponível em: https://tidsskrift.dk/math/article/view/11827. Acesso em: 14 aug. 2026.