BAKAN, A. G. Criterion for the Denseness of Algebraic Polynomials in the Spaces $L_p \left( {{\mathbb{R}},d {\mu }} \right)$, $1 ≤ p < ∞$. Ukrains’kyi Matematychnyi Zhurnal, [S. l.], v. 55, n. 5, p. 701–705, 2003. Disponível em: https://umj.imath.kiev.ua/index.php/umj/article/view/3944. Acesso em: 5 dec. 2025.