The WEBT campaigns on BL Lacertae - Time and cross-correlation analysis of optical and radio light curves 1968–2003
A&A, 424 2 (2004) 497-507
Published online: 2004-08-23
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https://doi.org/10.1051/0004-6361/200912065
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https://doi.org/10.1051/0004-6361:200810937
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https://doi.org/10.1051/0004-6361:20079044
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