AL-BTOUSH, Rateb; NIZAR KH.KH., Al-Oushoush. APPROXIMATION OF CONTIONUOUS FUNCTIONS BY VALLEE-POUSSIN’S SUMS. Italian Journal of Pure and Applied Mathematics, [S. l.], v. 37, p. 541–552, 2017. Disponível em: https://journals.uniurb.it/index.php/ijpam/article/view/6680. Acesso em: 16 sep. 2026.