The synthesis of composite spectra : a study of four globular clusters of the galaxy, five globular clusters of M31, and the nucleus of NGC 205
A spectral synthesis technique similar to that of Spinrad and Taylor (1971) has been applied to the integrated light of globular clusters M5, M13, M15, and M92 of the Galaxy; H12, H55, H140, B282, and MIV of M31; and to the nucleus of the elliptical galaxy NGC 205. The derived stellar contents of th...
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https://thesis.library.caltech.edu/1924/1/Christensen_cg_1972.pdfChristensen, Clark G. (1972) The synthesis of composite spectra : a study of four globular clusters of the galaxy, five globular clusters of M31, and the nucleus of NGC 205. Dissertation (Ph.D.), California Institute of Technology. doi:10.7907/VTAK-FR10. https://resolver.caltech.edu/CaltechETD:etd-05212008-111500 <https://resolver.caltech.edu/CaltechETD:etd-05212008-111500>