BONSALL, F. F.; LINDENSTRAUSS, J.; PHELPS, R. R. Extreme Positive Operators on Algebras of Functions. MATHEMATICA SCANDINAVICA, [S. l.], v. 18, p. 161–182, 1966. DOI: 10.7146/math.scand.a-10789. Disponível em: https://www.mscand.dk/article/view/10789. Acesso em: 2 may. 2024.