L. A. Dimov, “ON THE SOLUTION AND SOLVING OF LINEAR DIFFERENTIAL EQUATION OF THIRD ORDER WITH FUNCTIONAL COEFFICIENTS”, Mat. Bilt., vol. 34, no. 1, pp. 47–51, Jan. 2010, Accessed: Aug. 14, 2026. [Online]. Available: https://bilten.smm.org.mk/index.php/bilten/article/view/1762