OSȨKOWSKI, Adam. Some Sharp Estimates for the Haar System and Other Bases In $L^1(0,1)$. Mathematica Scandinavica, Berkeley, CA, United States, v. 115, n. 1, p. 123–142, 2014. DOI: 10.7146/math.scand.a-18006. Disponível em: https://journals.msp.org/mscand/article/view/412. Acesso em: 24 jul. 2026.