Luneckas, Tomas. “Evaluating Terrain Irregularity by Robot Posture”. Mokslas – Lietuvos ateitis / Science – Future of Lithuania 3, no. 1 (August 22, 2011): 96-99. Accessed May 20, 2022. https://journals.vilniustech.lt/index.php/MLA/article/view/5019.