Patil, Suhas Vinaya, and Pinjala Vijay Babu. “Performance Comparison of Twisted Tape and Screw Tape Inserts in Square Duct”. International Journal on Advanced Science, Engineering and Information Technology 1, no. 1 (February 1, 2011): 50–55. Accessed July 22, 2024. https://ijaseit.insightsociety.org/index.php/ijaseit/article/view/13.