@inproceedings{ivar1900sur, title={Sur les équations de l’équilibre d’un corps solide élastique}, author={Ivar Fredholm}, url={http://archive.ymsc.tsinghua.edu.cn/pacm_paperurl/20170108203005006285056}, booktitle={Acta Mathematica}, volume={23}, number={1}, pages={1-42}, year={1900}, }