X-ray spectral evolution of TeV BL Lacertae objects: eleven years of observations with BeppoSAX, XMM-Newton and Swift satellites (Corrigendum)F. Massaro, A. Tramacere, A. Cavaliere, M. Perri and P. GiommiA&A, 528 (2011) C1DOI: https://doi.org/10.1051/0004-6361/20078639e
