Only own-price electricity demand elasticity reported in the paper; stated verbally as the headline space-heating price response || 'With both models the short-run own-price elasticity computed for the last four years of the observation period is about -0.6, whereas the cross-price elasticity is just above 0.2.' (p.190)
Carlevaro, F. and C. Spierer (1983): “Dynamic Energy Demand Models with Latent Equipment.” European Economic Review 23(2), 161-194