Arabul, A. , Senol, I. , Arabul, F. , Aydeniz, M. , Oner, Y. , Kalkan, G. (2015), 'An Investigation on Hot-Spot Temperature Calculation Methods of Power Transformers', World Academy of Science, Engineering and Technology, Open Science Index 104, International Journal of Energy and Power Engineering, 9(8), 1036 - 1040.