Representative ind estimate for no-PDF (yellow) study; author preference unknowable. Value -0.17 confirmed against Dahl DEDD ref Apt83 (El-ii_tx cotton textiles IR -0.17); Dahl cross-check CONFIRMED.
Apte, P.G. (1983): “Substitution Among Energy and Non-Energy Inputs in Selected Indian Manufacturing Industries: An Econometric Analysis.” Indian Economic Journal 31(2), 71-94