Representative ind estimate for no-PDF (yellow) study; author preference unknowable. Value -0.542 confirmed against Dahl DEDD ref Che75d (El-i15 SR -0.542); Dahl cross-check CONFIRMED.
Chern, W. S. (1975): “Estimating Industrial Demand for Electricity: Methodology and Empirical Evidence,” In: Energy: Mathematics and Models, Proceedings of A Siam Institute for Mathematics and Society Conference, At Alta, Utah, July 7-11, 103-120.