MathSciDoc: An Archive for Mathematician ∫

@inproceedings{n.1955on,
  title={On symbolic calculus of two variables},
  author={N. K. Chakravarty},
  url={http://archive.ymsc.tsinghua.edu.cn/pacm_paperurl/20170108203141811275809},
  booktitle={Acta Mathematica},
  volume={93},
  number={1},
  pages={1-14},
  year={1955},
}