@techreport{TUW-199813, author = {Alfons, Andreas and Templ, Matthias}, title = {Some issues in mapping: Projections and correlations on indicators in time}, institution = {E105 - Institute of Statistics and Mathematical Methods in Economics; Vienna University of Technology}, year = {2011}, number = {European Commission,FP7-SSH-2007-217322,WP8-D8.2-4} }