No single headline own-price elasticity is preferred by the authors; the paper reports a sector-by-sector set. The abstract and conclusions emphasize the low own-price responsiveness across all sectors except agriculture, so the whole set of electricity own-price elasticities is the authors' object of interest rather than one point. Marking none as uniquely preferred. || 'Our major conclusion from the own-price elasticities of different fuels is the low responsiveness to price changes in all sectors, with the exception of agriculture.' (p.44)
Vlachou, A. S. and E. J. Samouilidis (1986): “Interfuel Substitution Results from Several Sectors of the Greek Economy.” Energy Economics 8(1), 39-45