@misc{zorita_modes_of_2001, 
author={Zorita, E., Saenz, J., Fernandez, J., Zubillaga, J.},
title={Modes of winter precipitation variability in the North Atlantic},
year={2001},
howpublished = {GKSS report},
note = {Zorita, E.; Saenz, J.; Fernandez, J.; Zubillaga, J.: Modes of winter precipitation variability in the North Atlantic. GKSS 2001-27. 2001.}}