HANSSON, Kurt. Imbedding theorems of Sobolev type in potential theory. Mathematica Scandinavica, Berkeley, CA, United States, v. 45, p. 77–102, 1979. DOI: 10.7146/math.scand.a-11827. Disponível em: https://journals.msp.org/mscand/article/view/1823. Acesso em: 25 jul. 2026.