@misc{lionello_is_the_2005, 
author={Lionello, P.,de Zolt, S.,Luterbacher, J.,Zorita, E.},
title={Is the winter European climate of the last 500 years conditioned by the variability of solar irradiance and volcanism?},
year={2005},
howpublished = {GKSS report},
note = {Online available at: \url{} (DOI). Lionello, P.; de Zolt, S.; Luterbacher, J.; Zorita, E.: Is the winter European climate of the last 500 years conditioned by the variability of solar irradiance and volcanism?. GKSS 2005-10. 2005.}}