@InProceedings{Kretz2013a, author = {Kretz, T.}, title = "{Counterflow in Evacuations}", editor = {Kozlov, V.V. and Buslaev, A.P. and Bugaev, A.S. and Yashina M.V. and Schadschneider, A. and Schreckenberg, M.}, booktitle = {Traffic and Granular Flow '11}, pages = {129--138}, doi = {10.1007/978-3-642-39669-4_13}, isbn = {978-3-642-39668-7}, year = {2013}, archivePrefix = {arXiv}, primaryClass = {physics.soc-ph}, eprint = {1110.1494} }