@misc{elsholz_sequential_injection_2001, 
author={Elsholz, O., Frank, C., Stachel, B., Reincke, H., Ebinghaus, R.},
title={Sequential injection standard addition (SISA) for on-line measurement of mercury in the river Elbe},
year={2001},
howpublished = {journal article},
note = {Elsholz, O.; Frank, C.; Stachel, B.; Reincke, H.; Ebinghaus, R.: Sequential injection standard addition (SISA) for on-line measurement of mercury in the river Elbe. Analytica Chimica Acta. 2001. vol. 438, no. 1 / 2, 251-258.}}