BONSALL, F. F.; LINDENSTRAUSS, J.; PHELPS, R. R. Extreme Positive Operators on Algebras of Functions. Mathematica Scandinavica, Berkeley, CA, United States, v. 18, p. 161–182, 1966. DOI: 10.7146/math.scand.a-10789. Disponível em: https://journals.msp.org/mscand/article/view/2513. Acesso em: 25 jul. 2026.