@misc{callis_local_analysis_2004, 
author={Callis, U.,Scharfe, M.},
title={Local analysis of parameter covariances resulting from the calibration of an overparameterized water quality model},
year={2004},
howpublished = {conference lecture: Santa Fe, NM (USA); 08.-11.03.2004},
note = {Online available at: \url{} (DOI). Callis, U.; Scharfe, M.: Local analysis of parameter covariances resulting from the calibration of an overparameterized water quality model. Fourth International Conference on Sensitivity Analysis of Model Output, SAMO 2004. Santa Fe, NM (USA), 2004.}}