Miller, N.L.; Hayhoe, K.; Jin, J. & Auffhammer, M. Climate, extreme heat, and electricity demand in California, article, April 1, 2008; (https://digital.library.unt.edu/ark:/67531/metadc901337/m1/4/: accessed May 23, 2019), University of North Texas Libraries, Digital Library, digital.library.unt.edu; .