Single reported model; the -0.142 marginal-price coefficient is the headline short-run own-price elasticity emphasized in the abstract, results, and conclusions || 'the estimated price elasticity (B4) is -0.14 ... we reject the hypothesis at the 0.01 level' and 'the short-run price elasticity of -0.14 estimated in this analysis' (p.394-395)
Walker, J. (1979): “The Residential Demand for Electricity: Further Empirical Evidence.” Resources and Energy 2(4), 391-396