@misc{witter_investigations_on_1995, 
author={Witter, B., Francke, W., Knauth, H.-D.},
title={Investigations on the supercritical fluid extraction of spiked organic pollutants from wet soils},
year={1995},
howpublished = {journal article},
note = {Witter, B.; Francke, W.; Knauth, H.: Investigations on the supercritical fluid extraction of spiked organic pollutants from wet soils. Fresenius Journal of Analytical Chemistry. 1995. vol. 353, 107-109.}}