NGUYEN, C. M. Nonlinear approximations of functions having mixed smoothness. Journal of Computer Science and Cybernetics, [S. l.], v. 35, n. 2, p. 119–134, 2019. DOI: 10.15625/1813-9663/35/2/13578. Disponível em: https://vjs.ac.vn/index.php/jcc/article/view/13578. Acesso em: 28 apr. 2024.