MathSciDoc: An Archive for Mathematician ∫

@inproceedings{sigurđur1959differential,
  title={Differential operators on homogeneous spaces},
  author={SigurĐur Helgason},
  url={http://archive.ymsc.tsinghua.edu.cn/pacm_paperurl/20170108203153340342895},
  booktitle={Acta Mathematica},
  volume={102},
  number={3},
  pages={239-299},
  year={1959},
}