@misc{krull_backfitting_of_1990, 
author={Krull, W.},
title={Backfitting of the FRG reactors},
year={1990},
howpublished = {conference lecture: Knoxville, TN (USA);},
note = {Krull, W.: Backfitting of the FRG reactors. In: IGORR-1: Proceedings of the First Meeting of the International Group on Research Reactors. Knoxville, TN (USA). 1990. 197-216.}}