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		| Paper: | 
		An X-ray and Optical AGN Survey in SA 57 | 
	 
	
		| Volume: | 
		373, The Central Engine of Active Galactic Nuclei | 
	 
	
		| Page: | 
		722 | 
	 
	
		| Authors: | 
		Trevese, D.; Vagnetti, F.; Zitelli, V.; Puccetti, S.; Boutsia, K.; Fiore, F.; Bershady, M. | 
	 
	
	
		| Abstract: | 
		We present a medium-deep XMM-Newton X-ray survey in the field of SA57. We discuss X-ray properties of low-luminosity AGNs previously selected through their optical variability. | 
	 
	
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