MathSciDoc: An Archive for Mathematician ∫

@inproceedings{masatake1993fredholm,
  title={Fredholm property of partial differential operators of irregular singular type},
  author={Masatake Miyake, and Masafumi Yoshino},
  url={http://archive.ymsc.tsinghua.edu.cn/pacm_paperurl/20170108203546404117648},
  booktitle={Arkiv for Matematik},
  volume={33},
  number={2},
  pages={323-341},
  year={1993},
}