@phdthesis{Kretz2007a, author = {Kretz, T.}, title = "{Pedestrian Traffic -- Simulation and Experiments}", school = {Universit\"at Duisburg-Essen}, year = {2007}, note = {urn:nbn:de:hbz:464-20070302-120944-7}, url = {http://deposit.d-nb.de/cgi-bin/dokserv?idn=983420513} }