Integral relations for solutions of the confluent Heun equation

@article{ElJaick2015IntegralRF,
  title={Integral relations for solutions of the confluent Heun equation},
  author={L{\'e}a Jaccoud El-Jaick and Bartolomeu D. B. Figueiredo},
  journal={Appl. Math. Comput.},
  year={2015},
  volume={256},
  pages={885-904}
}
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TLDR
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