Line Profile Functions (Spectral Line Broadening)
What is one of the causes of the breadth of spectral lines? - Quora
Spectral Line - an overview
Spectroscopy 101 – Types of Spectra and Spectroscopy
Spectral Types Important in Characterizing Stars
Spectra
Chapter 4, Section 4
Spectra lines - Definition, Classification, Types, broadening, Examples, FAQs and Video of spectral lines.
The shape of spectral lines