Robuta

https://www.aanda.org/articles/aa/ref/2003/07/aa3067/aa3067.html Starburst galaxies and the X-ray background | Astronomy & Astrophysics (A&A) x ray background starburst galaxies astronomy astrophysics https://arxiv.org/abs/astro-ph/9311026v1 [astro-ph/9311026v1] The X-Ray Background: Observations Abstract page for arXiv paper astro-ph/9311026v1: The X-Ray Background: Observations x ray background astro ph observations https://arxiv.org/abs/astro-ph/9311026 [astro-ph/9311026] The X-Ray Background: Observations Abstract page for arXiv paper astro-ph/9311026: The X-Ray Background: Observations x ray background astro ph observations https://arxiv.org/abs/astro-ph/9903447 [astro-ph/9903447] The contribution of faint AGN to the hard X-ray background Abstract page for arXiv paper astro-ph/9903447: The contribution of faint AGN to the hard X-ray background