@inbook{Koopman2011,
author = {Koopman, S.J. and Ooms, M.},
title= {Forecasting economic time series using unobserved components time series models},
year = {2011},
editor = {Clements, M.P.},
editor = {Hendry, D.F.},
booktitle = {The Oxford handbook of economic forecasting},
address = {Oxford},
publisher = {Oxford University Press},
}