\input zb-basic \input zb-ioport \iteman{io-port 70901016} \itemau{Crone, Sven F.; Kourentzes, Nikolaos} \itemti{Input-variable specification for neural networks - an analysis of forecasting low and high time series frequency} \itemso{IJCNN, 619-626 (2009).} \itemcc{} \itemut{} \itemli{doi:10.1109/IJCNN.2009.5179046} \end