@misc{guenther_wam_model_1991, 
author={Guenther, H.},
title={WAM model implementation at ECMWF},
year={1991},
howpublished = {conference lecture: Westerland, Sylt (D);},
note = {Guenther, H.: WAM model implementation at ECMWF. 9th WAM Meeting of the Wave Modelling Group. Westerland, Sylt (D), 1991.}}