Calibration and monitoring of the ASTRI-Horn telescope by using the night-sky background measured by the photon-statistics ("variance") method
Proceedings article published in 2019 by
A. Segreto 
,
O. Catalano,
M. C. Maccarone,
T. Mineo ,
A. La Barbera,
F. The Cta Astri Project
,
O. Catalano,
M. C. Maccarone,
T. Mineo ,
A. La Barbera,
F. The Cta Astri Project
