Quantitative sociodynamics, 1995: CIP t.p. (Dirk Helbing; Institute of Theoretical Physics, Stuttgart, Germany)

Traffic and granular flow '99, 2000: CIP t.p. (D. Helbing) galley verso t.p. (Dirk Helbing; Inst. für Theoretische Physik, Universität Stuttgart)

Modelling and optimisation of flows on networks, c2013: t.p. (Dirk Helbing) t.p. verso (Dirk Helbing, ETH Zürich, Swiss Federal Institute of Technology, Zurich, Switzerland)

ETH/Eidgenössische Technische Hochschule Zürich website, viewed January 29, 2013: link to Chair of Sociology, in particular of Modeling and Simulation page (Helbing, Dirk, Prof. Dr.; has been at ETH Zurich since 2007; completed his doctoral thesis at Stuttgart University)