MathSciDoc: An Archive for Mathematician ∫

@inproceedings{george1963fredholm,
  title={Fredholm eigenvalues and quasiconformal mapping},
  author={George Springer},
  url={http://archive.ymsc.tsinghua.edu.cn/pacm_paperurl/20170108203203612085973},
  booktitle={Acta Mathematica},
  volume={111},
  number={1},
  pages={121-142},
  year={1963},
}