@techreport{guenther_assimilation_of_1992, 
author={Guenther, H. and Lionello, P. and Janssen, P. A. E. M.},
title={Assimilation of altimeter data in a global third generation wave model (ECMWF-67)},
year={1992},
type = {GKSS-Bericht: Report;},
note = {Guenther, H.; Lionello, P.; Janssen, P. A. E. M.: Assimilation of altimeter data in a global third generation wave model (ECMWF-67). 1992.}}