M. Murad, N., Kamarudin, M., Md. Rozali, S., M. Shaharudin, N., Khamis, A. and Husain, A. 2017. Variable Speed Control of Two-Mass Wind Turbine with Unknown Stiffness. Journal of Telecommunication, Electronic and Computer Engineering (JTEC). 9, 4 (Dec. 2017), 117–121.