Long-run own-price elasticity is the paper's headline result, emphasized as unitary elastic and 'best for policy purposes'; abstract features both SR and LR elasticities but conclusions single out the LR price elasticity || 'from the five independent variables of our study the price of electricity is the best for policy purposes, since the long-run price elasticity of demand is unitary elastic' (p.2727)
Dergiades, T., and L. Tsoulfidis (2008): “Estimating Residential Demand for Electricity in the United States, 1965–2006.” Energy Economics 30(5), 2722-2730