Hadžieva E, Piperevski B. ON REDUCIBILITY OF A CLASS OF A LINEAR DIFFERENTIAL EQUATIONS OF THIRD ORDER WITH POLYNOMIAL COEFFICIENTS. Mat. Bilt. [Internet]. 2003 Jan. 1 [cited 2026 Aug. 14];27(1):107-12. Available from: https://bilten.smm.org.mk/index.php/bilten/article/view/1669