@inproceedings{per1950on,
title={On an unsolved question concerning the diophantine equation$Ax$^{3}+By^{3}=C},
author={Per Häggmark},
url={http://archive.ymsc.tsinghua.edu.cn/pacm_paperurl/20170108203411371399849},
booktitle={Arkiv for Matematik},
volume={1},
number={3},
pages={279-294},
year={1950},
}
Per Häggmark. On an unsolved question concerning the diophantine equation$Ax$^{3}+By^{3}=C. 1950. Vol. 1. In Arkiv for Matematik. pp.279-294. http://archive.ymsc.tsinghua.edu.cn/pacm_paperurl/20170108203411371399849.