@misc{bray_a_survey_2014, 
author={Bray, D.,Storch, H.v.},
title={A survey of the perceptions of climate scientists 2013},
year={2014},
howpublished = {HZG report},
note = {Online available at: \url{} (DOI). Bray, D.; Storch, H.: A survey of the perceptions of climate scientists 2013. HZG Report 2014-4. Geesthacht: Helmholtz-Zentrum Geesthacht, Zentrum für Material- und Küstenforschung GmbH. 2014.}}