Kim, Sangchul, and Shinjo Eom. “Free-Form External Design Using BIM and Development of Grasshopper Model”. International Journal of Engineering & Technology 7, no. 3.24 (August 10, 2018): 146–152. Accessed April 29, 2024. https://www.sciencepubco.com/index.php/ijet/article/view/22525.