Cauchy biorthogonal polynomials

@article{Bertola2009CauchyBP,
  title={Cauchy biorthogonal polynomials},
  author={Marco Bertola and M. Gekhtman and Jacek Szmigielski},
  journal={J. Approx. Theory},
  year={2009},
  volume={162},
  pages={832-867}
}

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