... based on the LBL report: http://eetd.lbl.gov/sites/all/files/lbnl-187225.pdf
M6. Weighted Time-of-Week-and-Temperature [Piette et al. 2013]: Piette, M.A., Brown R.E., Price P.N., Page, J., Granderson, J., Riess, D., et al. (2013). Automated measurement and signaling systems for the transactional network. Lawrence Berkeley National Laboratory, December 2013. LBNL-6611E.
M5. Time-of-Week-and-Temperature [Mathieu et al. 2011]: Mathieu, J.L., Price, P.N., Kiliccote, S., Piette, M.A. (2011). Quantifying changes in building electricity use, with application to Demand Response. IEEE Transactions on Smart Grid 2:507-518, 2011.