Kropp, J. P., Block, A., Reußwig, F., Zickfeld, K., Schellnhuber, H. J. (2006): Semiquantitative assessment of regional climate vulnerability: The North-Rhine Westphalia study. - Climatic Change, 76, 03. Apr, 265-290.https://doi.org/10.1007/s10584-005-9037-7