@misc{leonhard_overcoming_the_2003, 
author={Leonhard, P., Proefrock, D., Prange, A.},
title={Overcoming the problems of interferences in the determination of sulphur and phosphorus by ICP-MS with an Octopole Reaction System},
year={2003},
howpublished = {conference poster: Garmisch-Partenkirchen (D);},
note = {Leonhard, P.; Proefrock, D.; Prange, A.: Overcoming the problems of interferences in the determination of sulphur and phosphorus by ICP-MS with an Octopole Reaction System. In: Winter Plasma Conference. Garmisch-Partenkirchen (D). 2003.}}