@misc{heyen_detecting_relationships_1998, author={Heyen, H.}, title={Detecting relationships between the interannual variability in climate records and ecological time series using a multivariate statistical approach - four case studies for the North Sea region (Dissertation)}, year={1998}, howpublished = {doctoral thesis,GKSS report}, note = {Online available at: \url{} (DOI). Heyen, H.: Detecting relationships between the interannual variability in climate records and ecological time series using a multivariate statistical approach - four case studies for the North Sea region (Dissertation). Universitaet Hamburg, FB Geowissenschaften, 1998.}}