KATO, H., K. KUSUNOKI, and T. FUKUTA. “Experimental Study on Torsional Vibration Behavior of Steel Frame Specimen With Eccentricity”. ITU ARI Bulletin of Istanbul Technical University, vol. 53, no. 02, Sept. 2003, pp. 73-80, https://ari.itu.edu.tr/index.php/ituari/article/view/41.