@misc{grabemann_aperiodic_variations_1994, 
author={Grabemann, I.,Kappenberg, J.,Krause, G.},
title={Aperiodic variations of the turbidity maxima of two german coastal plain estuaries},
year={1994},
howpublished = {conference lecture: Aveiro (P); September 5-9, 1994},
note = {Online available at: \url{} (DOI). Grabemann, I.; Kappenberg, J.; Krause, G.: Aperiodic variations of the turbidity maxima of two german coastal plain estuaries. Joint Symposium of ESCA and University of Aveiro: Northern and Southern European Estuaries and Coastal  Areas. Aveiro (P), 1994.}}