Gryshchuk, S.V. “Hypercomplex Monogenic Functions of the Biharmonic Variable in Some Problems of Plane Elasticity Theory”. Reports of the National Academy of Sciences of Ukraine, no. 6 (February 4, 2025): 7–12. Accessed May 28, 2026. https://nasu-periodicals.org.ua/index.php/dp/article/view/14997.