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		| Paper: | 
		Orbital Period Behavior of some Close Binary Stars | 
	 
	
		| Volume: | 
		335, The Light-Time Effect in Astrophysics:  Causes and Cures of the O - C diagram | 
	 
	
		| Page: | 
		75 | 
	 
	
		| Authors: | 
		Rovithis-Livaniou, H. | 
	 
	
	
		| Abstract: | 
		The orbital-period behavior of some close binaries of various kinds is examined. Results for some specific close binaries obtained from the analysis of their O – C diagrams using different methods are presented and some new questions, arising from these new findings, are mentioned and discussed. | 
	 
	
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