Kala, Zdeněk. “Geometrically Non-Linear Finite Element Reliability Analysis of Steel Plane Frames With Initial Imperfections”. Journal of Civil Engineering and Management 18, no. 1 (February 8, 2012): 81-90. Accessed January 10, 2025. https://mla.vilniustech.lt/index.php/JCEM/article/view/4415.