REM near-IR and optical multiband observations of PKS 2155-304 in 2005 A. Dolcini, F. Farfanelli, S. Ciprini, A. Treves, S. Covino, G. Tosti, E. Pian, B. Sbarufatti, E. Molinari, G. Chincarini et al. (16 more) A&A, 476 3 (2007) 1219-1221 Published online: 09 October 2007 DOI: 10.1051/0004-6361:20066477e