B. Ilievski, “ON SOME QUADRATURES IN CERTAIN SPECIAL CLASSES OF THE VEKUA EQUATIONS”, Mat. Bilt., vol. 17, no. 1, pp. 75–82, Jan. 1993, Accessed: Aug. 14, 2026. [Online]. Available: https://bilten.smm.org.mk/index.php/bilten/article/view/1502