@article {21709,
	title = {Supermassive black holes at high redshifts},
	volume = {51},
	year = {2019},
	month = {2019/05/1},
	pages = {289},
	abstract = {MeV blazars are the most luminous sources in the Universe and host supermassive black holes. An MeV survey will detect \&gt;1000 of them up to z \&gt; 5. This would allow us: to probe the formation and growth of massive black holes at high z; to pinpoint the emission region location in blazars; to determine the interplay of accretion and black hole spin.},
	url = {https://ui.adsabs.harvard.edu/abs/2019BAAS...51c.289A},
	author = {Ajello, Marco and Paliya, Vaidehi and Marcotulli, Lea and Perkins, Jeremy S. and Prandini, Elisa and D{\textquoteright}Ammando, Filippo and De Angelis, Alessandro and Thompson, David and Li, Hui and Dominguez, Alberto and Beckmann, Volker and Guiriec, Sylvain and Wadiasingh, Zorawar and Coppi, Paolo and Harding, J. Patrick and Petropoulou, Maria and Hewitt, John W. and Ojha, Roopesh and Marcowith, Alexandre and Doro, Michele and Castro, Daniel and Baring, Matthew and Hays, Elizabeth and Orlando, Elena and Guiriec, Sylvain and Bozhilov, Vladimir and Tomsick, John and Agudo, Ivan and Venters, Tonia and McEnery, Julie and The, Lih-Sin and Hartmann, Dieter and Buson, Sara and Longo, Francesco and Gasparrini, Dario}
}
