A. V. Anop, T. M. Kasirenko, and A. A. Murach, “Irregular elliptic boundary-value problems and Hörmander spaces”, Ukr. Mat. Zhurn., vol. 70, no. 3, pp. 299–317, Mar. 2018, Accessed: Dec. 05, 2025. [Online]. Available: https://umj.imath.kiev.ua/index.php/umj/article/view/1558