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		| Paper: | 
		Ten Years Optical Photometry of TeV BL Lacertae Objects | 
	 
	
		| Volume: | 
		408, The Starburst−AGN Connection | 
	 
	
		| Page: | 
		266 | 
	 
	
		| Authors: | 
		Kurtanidze, O.M.; Tetradze, S.D.; Richter, G.M.; Nikolashvili, M.G.; Kimeridze, G.N.; Sigua, L.A. | 
	 
	
	
		| Abstract: | 
		We present optical R band photometry for twelve extragalactic Xray BL Lacertae objects identified in the Einstein Slew Survey. Six of them 1ES 0229+200, 1ES 0806+524, 1ES 1011+496, 1ES 1426+428, 1ES 1959+650 and 1ES 2344+514 were later detected as very high-energy γ-ray sources. All these sources have been observed with ST-6 ccd camera attached to the Newtonian focus of the 70-cm meniscus telescope. These data provide optical information on sources that have rarely or never been observed in the optical bands. Variability in R band on long time-scales within 0.10-1.25 magnitude was found for all of the studied sources. | 
	 
	
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