@misc{bray_modelling_in_2002, 
author={Bray, D.},
title={Modelling in the Social Sciences},
year={2002},
howpublished = {conference lecture (invited): Hamburg (D); 08.05.2002},
note = {Online available at: \url{} (DOI). Bray, D.: Modelling in the Social Sciences. IMPRS Modelling Course SS 2002. Hamburg (D), 2002.}}