Paper focuses on the transformed-Wolffram asymmetric ridge specification (Eq 1.4 private, Eq 2.4 public); the own-price ('rising') elasticity is the coefficient on ln P in each ratchet equation. || 'In the analysis below, however, we focus on a comparison of the symmetric to the transformed Wolffram asymmetric specification.' (p.156); 'The rising price elasticity is given directly by the estimated coefficient on ln P in each ratchet equation.' (footnote 9, p.160)
Young, T., T. H. Stevens, and C. Willis (1983): “Asymmetry in the Residential Demand for Electricity.” The Energy Journal 4 (Special Issue), 153-162