S. A. Plaksa, “On the Noether property of singular integral equations with Cauchy kernels on a rectifiable curve”, Ukr. Mat. Zhurn., vol. 45, no. 10, pp. 1379–1389, Oct. 1993, Accessed: Apr. 16, 2025. [Online]. Available: https://umj.imath.kiev.ua/index.php/umj/article/view/5943