@inproceedings{Kop13a, author = {Kopfer, H. W. and Kopfer, H.}, title = {Emissions Minimization Vehicle Routing Problem in Dependence of Different Vehicle Classes}, booktitle = {Dynamics in Logistics}, year = {2013}, editor = {Kreowski, H,-J. and Scholz-Reiter, B. and Thoben, K.-D.}, publisher = {Springer}, doi = {10.1007/978-3-642-35966-8_4}, pages = {49-58} }