„On the use of approximate numerical and analytical methods in order to solve the differential equations that describe vibrations of the mechanical systems“, ANN_UDJG_IM, Bd. 19, Nr. 2, S. 71–76, Nov. 2012, Zugegriffen: Nov. 02, 2026. Verfügbar unter: https://ojs.ugal.ro/index.php/im/article/view/3735