WALTERS, S. Decomposable projections related to the Fourier and flip automorphisms. MATHEMATICA SCANDINAVICA, [S. l.], v. 107, n. 2, p. 174–197, 2010. DOI: 10.7146/math.scand.a-15150. Disponível em: https://www.mscand.dk/article/view/15150. Acesso em: 27 apr. 2024.