Janušaitis, Rolandas, Valerijus Keras, and Jūratė Mockienė. “Development of Methods for Designing Rational Trusses”. Journal of Civil Engineering and Management 9, no. 3 (September 30, 2003): 192-197. Accessed April 25, 2024. https://journals.vilniustech.lt/index.php/JCEM/article/view/9051.