Correlation between the TeV and X-ray emission in high-energy peaked BL Lac objects K. Katarzyński, G. Ghisellini, F. Tavecchio, L. Maraschi, G. Fossati and A. Mastichiadis A&A, 433 2 (2005) 479-496 Published online: 22 March 2005 DOI: 10.1051/0004-6361:20041556