WALTERS, S. Decomposable projections related to the Fourier and flip automorphisms. Mathematica Scandinavica, Berkeley, CA, United States, v. 107, n. 2, p. 174–197, 2010. DOI: 10.7146/math.scand.a-15150. Disponível em: https://journals.msp.org/mscand/article/view/547. Acesso em: 24 jul. 2026.