Ahmed H. Ahemer, and Anis A. Mohamad Ali. “Effect of Type of Support on The Responce of Offshore Sructure Under Seismic Load”. University of Thi-Qar Journal, vol. 14, no. 2, June 2019, pp. 87-102, https://www.jutq.utq.edu.iq/index.php/main/article/view/190.