@misc{klitzing_komplexe_systeme_2005, 
author={Klitzing, R.v.,Stock, N.,Willumeit, R.},
title={Komplexe Systeme},
year={2005},
howpublished = {lecture: Christian-Albrechts-Universitaet, FB Physikalische Chemie; WS 2005-2006},
note = {Online available at: \url{} (DOI). Klitzing, R.; Stock, N.; Willumeit, R.: Komplexe Systeme. Christian-Albrechts-Universitaet, FB Physikalische Chemie, 2005.}}