ARHANCET, Cédric. Square Functions for Ritt Operators on Noncommutative $L^p$-Spaces. Mathematica Scandinavica, Berkeley, CA, United States, v. 113, n. 2, p. 292–319, 2013. DOI: 10.7146/math.scand.a-15573. Disponível em: https://journals.msp.org/mscand/article/view/436. Acesso em: 24 jul. 2026.