@inproceedings{lars1956on,
title={On a class of diophantine equations},
author={Lars Fjellstedt},
url={http://archive.ymsc.tsinghua.edu.cn/pacm_paperurl/20170108203419830463918},
booktitle={Arkiv for Matematik},
volume={3},
number={3},
pages={223-227},
year={1956},
}