JASSIM, S. K.; SHAMKHI, I. Z. Approximation of Functions in Lp, α (I) (0 < p < 1). Ibn AL-Haitham Journal For Pure and Applied Sciences, [S. l.], v. 26, n. 2, p. 334–347, 2017. Disponível em: https://jih.uobaghdad.edu.iq/index.php/j/article/view/481. Acesso em: 28 jun. 2022.