@misc{schultheiss_cooperation_model_1988, 
author={Schultheiss, G. F.},
title={Cooperation model research and development: underwater technology},
year={1988},
howpublished = {conference lecture: Hamburg (D); September 28, 1988},
note = {Online available at: \url{} (DOI). Schultheiss, G.: Cooperation model research and development: underwater technology. VSM/UNIDO Expert Group Meeting on Cooperation Models of German Industry with Developing Countries in Offshore Technology. Hamburg (D), 1988.}}