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 Hagen-Thorn, V. A. | 
	 
	
		| Volume | 
		Paper Title | 
		Page Number | 
		Authors | 
	 
			
			| 110 | 
			Search for Periodicity in the Brightness Variations of the Active Extragalactic Objects BL Lac, OJ 287, and 3C 120 | 
			105 | 
			Marchenko, S. G.; Hagen-Thorn, V. A.; Yakovleva, V. A.; Mikolaichuk, O. V. | 
		 
			
			| 159 | 
			Analysis of the Colour Variations of Blazar 3C 66A in the Optical Region during 1993-1996 | 
			111 | 
			Hagen-Thorn, V. A.; Marchenko, S. G.; Takalo, L. O.; Sillanpää, A.; Pursimo, T. | 
		 
			
			| 159 | 
			Two Methods of Time Series Analysis and Their Application to the Optical Light Curves of OJ 287 and 3C 66A | 
			265 | 
			Marchenko, S. G.; Hagen-Thorn, V. A.; Yakovleva, V. A. | 
		 
	 
					 
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