J. Butts, and G. Sohi. MICRO 33: Proceedings of the 33rd annual ACM/IEEE international symposium on Microarchitecture, page 191--201. New York, NY, USA, ACM Press, (2000)
T. Burd, and R. Brodersen. Hawaii International Conference on System Sciences, (1995)mentions basic power formula
considers different computation modes (max/fixed throughput, burst, ..).