Representative ind estimate for no-PDF (yellow) study; author preference unknowable. Value -1.75 confirmed against Dahl DEDD ref And71qCra76 (El-ii_pm primary metal IR -1.75); Dahl cross-check CONFIRMED.
Anderson, K.P. (1971) “Towards Econometric Estimation of Industrial Energy Demand: An Experimental Application to the Primary Metal Industry.” Rand Corporation Report R-719-NSF, Santa Monica, California.