Optical variability of the blazar 3C 454.3 during 2007-2010V.A. Hagen-Thorn, V.M. Larionov, A.A. Arkharov, E.I. Hagen-Thorn and D.A. BlinovEPJ Web of Conferences, 61 (2013) 06010DOI: https://doi.org/10.1051/epjconf/20136106010