@misc{wilichowski_umweltanalytik__1997, 
author={Wilichowski, M.},
title={Umweltanalytik},
year={1997},
howpublished = {lecture: Universitaet der Bundeswehr; Herbsttrimester 1997},
note = {Online available at: \url{} (DOI). Wilichowski, M.: Umweltanalytik. Universitaet der Bundeswehr, 1997.}}