@article{Bates1969,
author = {Bates, J.M. and Granger, C.W.J.},
title= {The combination of forecasts},
year = {1969},
doi = {10.1057/jors.1969.103},
journal = {Operational Research Quarterly},
volume = {20},
number = {4},
pages = {451--468},
}