AGN and QSOs in the eROSITA All-Sky Survey - I. Statistical propertiesAlexander Kolodzig, Marat Gilfanov, Rashid Sunyaev, Sergey Sazonov and Marcella BrusaA&A, 558 (2013) A89DOI: https://doi.org/10.1051/0004-6361/201220880
