WASET
Liu, Y. , Bera, M. , Kyaw, L. , Lo, G. , Chor, E. (2012), 'Low resistivity Hf/Al/Ni/Au Ohmic Contact Scheme to n-Type GaN', World Academy of Science, Engineering and Technology, Open Science Index 69, International Journal of Electrical and Computer Engineering, 6(9), 957 - 960.