@inproceedings{r.1951periodische,
title={Periodische zyklische Differenzenmatrizen},
author={R. Szele},
url={http://archive.ymsc.tsinghua.edu.cn/pacm_paperurl/20170108203129986479720},
booktitle={Acta Mathematica},
volume={84},
number={1},
pages={181-187},
year={1951},
}