@misc{winkel_modellierung_von_1994, 
author={Winkel, N.},
title={Modellierung von Seegang in extremen Flachwasser (Dissertation)},
year={1994},
howpublished = {doctoral thesis,GKSS report},
note = {Online available at: \url{} (DOI). Winkel, N.: Modellierung von Seegang in extremen Flachwasser (Dissertation). Universitaet Hamburg, 1994.}}