„SPACE OF SOLUTIONS OF LINEAR DIFFERENTIAL EQUATION OF SECOND ORDER AS 2-NORMED SPACE“ (2021) Balkan Journal of Applied Mathematics and Informatics, 4(2), S. 83–90. Verfügbar unter: https://js.ugd.edu.mk/index.php/bjami/article/view/4272 (Zugegriffen: 3 Oktober 2025).