Gorodetsky, Alexander, Maryna Romashkina, and Bogdan Pysarevskiy. “SIXTH DEGREE OF FREEDOM”. International Journal for Computational Civil and Structural Engineering 16, no. 2 (June 26, 2020): 39–49. Accessed April 17, 2024. https://ijccse.iasv.ru/index.php/ijccse/article/view/290.