Our paper:

van Griensven A., Meixner, T., Grunwald S.,  Bishop, T., Di Luzio, M. and Srinivasan, R. (2006). A global sensitivity analysis method for the parameters of multi-variable watershed models, J. Hydrol., 324(1-4), 10-23.

was ranked first as classic paper (classic papers are highly-cited papers in their area of research that have stood the test of time) by Google Scholar in the category “Hydrology and Water Resources”.