8Greisen, E. W. 2025, “Spectral index fitting in ,” AIPS Memo 126, http://www.aips.nrao.edu/aipsdoc.html
,” AIPS Memo 126, http://www.aips.nrao.edu/aipsdoc.html,” AIPS Memo 126, http://www.aips.nrao.edu/aipsdoc.html