T. Pering, T. Burd, and R. Brodersen. ISLPED '00: Proceedings of the 2000 international symposium on Low power electronics and design, page 96--101. New York, NY, USA, ACM, (2000)
J. Bunda, D. Fussell, and W. Athas. HICSS '95: Proceedings of the 28th Hawaii International Conference on System Sciences (HICSS'95), page 298. Washington, DC, USA, IEEE Computer Society, (1995)
T. Burd, and R. Brodersen. Hawaii International Conference on System Sciences, (1995)mentions basic power formula
considers different computation modes (max/fixed throughput, burst, ..).