@misc{proefrock_new_combined_2009, 
author={Proefrock, D., Prange, A.},
title={New combined ESI and ICP-MS approach for the quantification of bio-molecules using phosphorus as element tag},
year={2009},
howpublished = {conference poster: Bremen (D);},
note = {Proefrock, D.; Prange, A.: New combined ESI and ICP-MS approach for the quantification of bio-molecules using phosphorus as element tag. In: 18th International Mass Spectrometry Conference. Bremen (D). 2009.}}