RASMUSSEN, Morten Grud. A taylor-like expansion of a commutator with a function of self-adjoint, pairwise commuting operators. Mathematica Scandinavica, Berkeley, CA, United States, v. 111, n. 1, p. 107–117, 2012. DOI: 10.7146/math.scand.a-15216. Disponível em: https://journals.msp.org/mscand/article/view/481. Acesso em: 24 jul. 2026.