Q. Yahya, D., Y. Mohammad, D. and M. Ali, D. (2015) “Estimation of Model Parameters, for Torsional Vibration Analysis ofa Turbo-Generator Unit with Reference to Mosul Gas-Turbine Station”, Al-Rafidain Engineering Journal (AREJ), 23(2), pp. 91–116. doi: 10.33899/rengj.2015.101077.