Plaksa, S. A. 2001. “On Integral Representations of an Axisymmetric Potential and the Stokes Flow Function in Domains of the Meridian Plane. I”. Ukrains’kyi Matematychnyi Zhurnal 53 (5), 631-46. https://umj.imath.kiev.ua/index.php/umj/article/view/4286.