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Citation: T. Pursimo et al., Intensive monitoring of OJ 287, ASTR AST SS, 146(1), 2000, pp. 141-155

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Citation: M. Lainela et al., The 65 day period in 3C 66A during bright state, ASTROPHYS J, 521(2), 1999, pp. 561-564

Authors: Raiteri, CM Villata, M Tosti, G Fiorucci, M Ghisellini, G Takalo, LO Sillanpaa, A Valtaoja, E Terasranta, H Tornikoski, M Aller, MF Aller, HD De Francesco, G Heinamaki, P Katajainen, S Lanteri, L Nilsson, K Pursimo, T Rizzi, N Sobrito, G

Citation: Cm. Raiteri et al., Optical and radio behaviour of the blazer S4 0954+65, ASTRON ASTR, 352(1), 1999, pp. 19-31

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Citation: E. Massaro et al., The extraordinary optical outburst of ON 231 (W Com) in spring 1998, ASTRON ASTR, 342(3), 1999, pp. L49-L52