@misc{jahnke_simultaneous_determination_2004, 
author={Jahnke, A.,Gandrass, J.,Ruck, W.},
title={Simultaneous determination of alkylphenol ethoxylates and their biotransformation products by liquid chromatography / electrospray ionisation tandem mass spectrometry},
year={2004},
howpublished = {journal article},
note = {Online available at: \url{} (DOI). Jahnke, A.; Gandrass, J.; Ruck, W.: Simultaneous determination of alkylphenol ethoxylates and their biotransformation products by liquid chromatography / electrospray ionisation tandem mass spectrometry. Journal of Chromatography  A. 2004. vol. 1035, no. 1, 115-122.}}