@inproceedings{james1976composite,
title={Composite integral operators and nuclearity},
author={James A. Cochran},
url={http://archive.ymsc.tsinghua.edu.cn/pacm_paperurl/20170108203501060180271},
booktitle={Arkiv for Matematik},
volume={15},
number={1},
pages={215-222},
year={1976},
}