Author's final selected forecasting models are the full 3-input models (12) monthly and (16) quarterly, used in Table 1 and Figures 5-6; monthly is preferred overall. || 'In Table 1 we present a variation of forecasting criteria of the models (12) and (16) employed, in order to choose the most appropriate time aggregation for LTF models... the monthly model forecasts are better than the corresponding quarterly one' (p.230)
Tserkezos, E. D. (1992): “Forecasting Residential Electricity Consumption in Greece Using Monthly and Quarterly Data.” Energy Economics 14(3), 226-232