Celmerowski, A., and A. Masłowski. “Parametric Identification of a Model of the Unloading Process of an Universal Trailer”. Engineering Transactions 39, no. 3-4 (December 31, 1991): 561–570. Accessed June 9, 2025. https://et3.ippt.pan.pl/index.php/et/article/view/1639.