Kovalenko, L. G., and E. A. Storozhenko. “On the Fractional Integrodifferentiation of Complex Polynomials in $L_0$”. Ukrains’kyi Matematychnyi Zhurnal, vol. 69, no. 5, May 2017, pp. 705-10, https://umj.imath.kiev.ua/index.php/umj/article/view/1729.