Representative res estimate for no-PDF (yellow) study; author preference unknowable. Internal median pick (value now equals Dahl -0.00006 (stale discrepant flag)) - UNVERIFIED by Dahl.
Wijemanne, E. N. (1987): “Energy Pricing Issues in Sri Lanka.” In: Energy Pricing Policies in Developing Countries: Theory and Empirical Evidence (ed. M. S. Kumar), International Labour Organization, New York, 173-213