Representative res estimate for no-PDF (yellow) study; author preference unknowable. Value -0.311 confirmed against Dahl DEDD ref M&C79 (El-r  SR -0.311); Dahl cross-check CONFIRMED.
Mount, T. D. and L. D. Chapman (1979): “Electricity Demand, Sulfur Emissions and Health: An Econometric Analysis of Power Generation in the United States.” In: International Studies of the Demand for Energy (ed. Nordhaus, W. D.), North-Holland, Amsterdam