Musaev, H. K., and V. B. Shakhmurov. “$b$-Coercive Convolution Equations in Weighted Function spaces and Applications”. Ukrains’kyi Matematychnyi Zhurnal, Vol. 69, no. 10, Oct. 2017, pp. 1385-0, https://umj.imath.kiev.ua/index.php/umj/article/view/1789.