Discrete sources as the origin of the Galactic X-ray ridge emissionDOI: info:10.1038/nature07946v. 4581142–1144
Revnivtsev, M., Sazonov, S., Churazov, Eugene, Forman, William R., Vikhlinin, Alexey A., and Sunyaev, R. 2009. "Discrete sources as the origin of the Galactic X-ray ridge emission." Nature, 458 1142–1144. https://doi.org/10.1038/nature07946.