1. Implementation of an efficient analytical approximation to the Voigt function for photoemission lineshape analysis;McLean;J Electron Spectros Related Phenom,1994
2. NIST handbook of mathematical functions;Olver,2010
3. DLMF. NIST digital library of mathematical functions. Nat Instit Stand Technol http://dlmf.nist.gov/. Online companion to [2].
4. Exoplanetary atmospheres — theoretical concepts and foundations;Heng,2017
5. Spectra of atoms and molecules;Bernath,2016