@misc{aust_activities_in_1991, 
author={Aust, E.},
title={Activities in underwater robotics at GKSS},
year={1991},
howpublished = {conference lecture: Rio de Janeiro, Campinas (BR);},
note = {Aust, E.: Activities in underwater robotics at GKSS. PETROBRAS / CENPES und UNICAMP. Rio de Janeiro, Campinas (BR), 1991.}}