Pering, Yeng-Horng, and Yu-Yin Huang. “Investigation of Technological Trends in Shading Devices through Patent Analysis”. Journal of Civil Engineering and Management 22, no. 6 (June 8, 2016): 818-830. Accessed November 26, 2024. https://mla.vgtu.lt/index.php/JCEM/article/view/1872.