AKISHEV, G. Estimations of the best M-term approximations of functions in the Lorentz space with constructive methods. Bulletin of the Karaganda University. Mathematics Series, [S. l.], v. 87, n. 3, p. 13–26, 2017. DOI: 10.31489/2017m3/13-26. Disponível em: https://mts.buketov.edu.kz/index.php/mathematics-vestnik/article/view/158. Acesso em: 10 jul. 2025.