MathSciDoc: An Archive for Mathematician ∫

@inproceedings{a.1950normalisable,
  title={Normalisable transformations in Hilbert space and systems of linear integral equations},
  author={A. C. Zaanen},
  url={http://archive.ymsc.tsinghua.edu.cn/pacm_paperurl/20170108203128574182713},
  booktitle={Acta Mathematica},
  volume={83},
  number={1},
  pages={197-248},
  year={1950},
}