Akishev, Gabdolla. “Estimates of M-Term Approximations of Functions of Several Variables in the Lorentz Space by a Constructive Method”. Eurasian Mathematical Journal 15, no. 2 (June 30, 2024): 08–32. Accessed September 17, 2025. https://emj.enu.kz/index.php/main/article/view/327.