Kud'yavina, Y. V., & Plaksa, S. A. (2010). Riemann boundary-value problem on an open rectifiable jordan curve. I.
Ukrains’kyi Matematychnyi Zhurnal
,
62
(11), 1511–1522.
https://umj.imath.kiev.ua/index.php/umj/article/view/2975