@misc{rudolph_the_influence_1990, 
author={Rudolph, E.,Eppel, D. P.},
title={The influence of variable surface roughness in the waddensea on the local windfield},
year={1990},
howpublished = {journal article},
note = {Online available at: \url{} (DOI). Rudolph, E.; Eppel, D.: The influence of variable surface roughness in the waddensea on the local windfield. Annales Geophysicae. 1990. 200.}}