@book{Hyndman2008,
author = {Hyndman, R.J. and Koehler, A.B. and Ord, J. K. and Snyder, R.D.},
title= {Forecasting with Exponential Smoothing: The State Space Approach},
year = {2008},
doi = {10.1007/978-3-540-71918-2},
address = {Berlin},
publisher = {Springer},
}