WASET
Amato, F. , Bedon, G. , Castelli, M. , Benini, E.. "Numerical Analysis of the Influence of Tip Devices on the Power Coefficient of a VAWT". World Academy of Science, Engineering and Technology, Open Science Index 78, International Journal of Aerospace and Mechanical Engineering, (2013), 7(6), 1053 - 1060.