Gatalskaja, T. I. “Explicit Solution of the Riemann Boundary Value Problem for Double Periodic Functions in Case of Compound Contour”. Mathematical Modelling and Analysis 8, no. 1 (March 31, 2003): 13-24. Accessed July 3, 2024. https://jau.vgtu.lt/index.php/MMA/article/view/9751.