SRAPIONYAN, Nerses. On the democratic constant of Haar subsystems in $L_1 [0,1]^d$. Armenian Journal of Mathematics, Yerevan, Armenia, v. 11, n. 8, p. 1–6, 2022. DOI: 10.52737/18291163-2019.11.8-1-6. Disponível em: https://armjmath.sci.am/index.php/ajm/article/view/291. Acesso em: 3 apr. 2025.