R. Bogacz and T. Szolc, “Analysis of Dynamic Interaction Between the Continuous String and Moving Oscillator”, Eng. Trans., vol. 41, no. 3-4, pp. 361–380, Dec. 1993, Accessed: Jun. 10, 2025. [Online]. Available: https://et3.ippt.pan.pl/index.php/et/article/view/1575