@misc{langenberg_a_40year_1998, 
author={Langenberg, H.,Storch, H.v.},
title={A 40-year coupled hindcast of ocean and atmosphere in the North Sea region},
year={1998},
howpublished = {report part},
note = {Online available at: \url{} (DOI). Langenberg, H.; Storch, H.: A 40-year coupled hindcast of ocean and atmosphere in the North Sea region. In: Research Activities in Atmospheric and Oceanic Modelling, WGNE Blue Book. 1998. 7.19-7.20.}}