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		| Paper: | Observations of Cataclysmic Variables and O - C Analysis |  
		| Volume: | 335, The Light-Time Effect in Astrophysics:  Causes and Cures of the O - C diagram |  
		| Page: | 305 |  
		| Authors: | Katysheva, N.A. |  
		| Abstract: | We review some observational data on cataclysmic variables: SU UMa stars during the superoutbursts, some dwarf novae, and several classical novae. The O – C diagrams for these objects are presented. |  
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