@article {1513, title = {Diatom-inference models for acid neutralizing capacity and nitrate based on 41 calibration lakes in the Sierra Nevada, California, USA.}, journal = {Journal of Paleolimnology}, volume = {50}, year = {2013}, pages = {159-174}, author = {Sickman, J.O. and Bennett, D.M. and Lucero, D.M. and Whitmore, T.J. and Kenney, W.F.} }