References

Legendre functions

• T. Limpanuparb and J. Milthorpe. “Associated Legendre Polynomials and Spherical Harmonics Computation for Chemistry Applications” In: Proceedings of the 40th Congress on Science and Technology of Thailand (Dec 2014) arXiv: 1410.1748

• “Legendre polynomials” on Wikipedia and Wolfram Math World

• “Associated Legendre polynomials” on Wikipedia and Wolfrm Math World