@misc{schroeder_a_hydraulic_1988, 
author={Schroeder, F., Knauth, H.-D.},
title={A hydraulic sediment corer},
year={1988},
howpublished = {conference lecture: Scheveningen (NL);},
note = {Schroeder, F.; Knauth, H.: A hydraulic sediment corer. 1st EUROMAR Technology Market. Scheveningen (NL), 1988.}}