BakanA. G. “Criterion of Polynomial Denseness and General Form of a Linear Continuous Functional on the Space $C_w^0$”. Ukrains’kyi Matematychnyi Zhurnal, Vol. 54, no. 5, May 2002, pp. 610-22, https://umj.imath.kiev.ua/index.php/umj/article/view/4099.