Universal X-ray emissivity of the stellar population in early-type galaxies: unresolved X-ray sources in NGC 3379DOI: info:10.1051/0004-6361:200809889v. 490EDP Sciences37–43
Revnivtsev, M., Churazov, Eugene, Sazonov, S., Forman, William R., and Jones, C. 2008. "Universal X-ray emissivity of the stellar population in early-type galaxies: unresolved X-ray sources in NGC 3379." Astronomy and Astrophysics, 490 37–43. https://doi.org/10.1051/0004-6361:200809889.