A. Celmerowski and A. Masłowski, “Parametric Identification of a Model of the Unloading Process of an Universal Trailer”, Eng. Trans., vol. 39, no. 3-4, pp. 561–570, Dec. 1991, Accessed: Jan. 17, 2026. [Online]. Available: http://et.ippt.gov.pl/index.php/et/article/view/1639