Bakan, A. G. “Polynomial Form of De Branges Conditions for the Denseness of Algebraic Polynomials in the Space $C_w^0$”. Ukrains’kyi Matematychnyi Zhurnal 57, no. 3 (March 25, 2005): 305–319. Accessed May 5, 2024. https://umj.imath.kiev.ua/index.php/umj/article/view/3599.