LASURIYA, R. A. Asymptotics of approximation of ψ-differentiable functions of many variables. Ukrains’kyi Matematychnyi Zhurnal, [S. l.], v. 60, n. 8, p. 1051–1057, 2008. Disponível em: https://umj.imath.kiev.ua/index.php/umj/article/view/3223. Acesso em: 6 dec. 2025.