Media type: E-Article Title: Principal component analysis of time series for identifying indicator variables for riverine groundwater extraction management Contributor: Page, Rebecca M.; Lischeid, Gunnar; Epting, Jannis; Huggenberger, Peter imprint: Elsevier BV, 2012 Published in: Journal of Hydrology Language: English DOI: 10.1016/j.jhydrol.2012.02.025 ISSN: 0022-1694 Origination: Footnote: