Now includes Fermi-Dirac integrals. Approximations are given for the complete Fermi-Dirac integrals and normalized Fermi-Dirac integrals of order -1/2, 1/2, 3/2 and 5/2.
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[6] https://arxiv.org/abs/0811.0116
[7] https://de.wikipedia.org/wiki/Fermi-Dirac-Integral
[8] https://dlmf.nist.gov/25.12#iii