@misc{jahnke_optimization_of_1989, 
author={Jahnke, J.,Michaelis, W.},
title={Optimization of the in-situ determination of Rhodamine-B in estuarine waters},
year={1989},
howpublished = {conference lecture: Reinbek (D); June 19-23, 1989},
note = {Online available at: \url{} (DOI). Jahnke, J.; Michaelis, W.: Optimization of the in-situ determination of Rhodamine-B in estuarine waters. International Symposium Estuarine Water Quality Management: Monitoring, Modelling and Research. Reinbek (D), 1989.}}