https://www.nist.gov/publications/pressure-broadening-and-shift-he2-3p012-he2-3s-lines
Pressure broadening and shift of He(2 3P0,1,2) -- He(2 3S) lines | NIST
pressure broadeninghe 2
https://arxiv.org/abs/2601.05313
[2601.05313] Overestimated Pressure Broadening Misleads Model Spectra in Cool M Dwarf Stars
Abstract page for arXiv paper 2601.05313: Overestimated Pressure Broadening Misleads Model Spectra in Cool M Dwarf Stars