Representative res estimate for no-PDF (yellow) study; author preference unknowable. Value -3.64 confirmed against Dahl DEDD ref HKM80 (El-r_heatmin SR -3.64); Dahl cross-check CONFIRMED.
Hyndman, R., Y. Kotowitz and F. Mathewson (1980): “The Residential Demand for Electric Energy and Natural Gas in Canada.” In: Energy Policy Modeling: United States and Canadian Experiences, Specialized Energy Policy Models I (eds.: W.T. Ziemba, S.L. Schwartz, E. Koenigsberg), Martinus Nijhoff Publishing: 86-102