@misc{krull_upgrading_and_1993, 
author={Krull, W.},
title={Upgrading and refurbishing experience of German research reactors},
year={1993},
howpublished = {conference lecture (invited): Budapest (H); 22.-26.11.1993},
note = {Online available at: \url{} (DOI). Krull, W.: Upgrading and refurbishing experience of German research reactors. IAEA Seminar on Research Reactor Centres Future Prospects. Budapest (H), 1993.}}