@misc{guenther_implementation_and_1992, 
author={Guenther, H.},
title={Implementation and validation at ECMWF},
year={1992},
howpublished = {conference lecture: Sintra (P); 12.-15.05.1992},
note = {Online available at: \url{} (DOI). Guenther, H.: Implementation and validation at ECMWF. 10th WAM Meeting. Sintra (P), 1992.}}