Shamoyan, R. F. “On the Representation of Linear Continuous Functionals in Spaces of Analytic Functions of the Hardy–Sobolev Type in a Polydisk”. Ukrains’kyi Matematychnyi Zhurnal, vol. 55, no. 5, May 2003, pp. 671-86, https://umj.imath.kiev.ua/index.php/umj/article/view/3942.