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		| Paper: | 
		Circumbinary Components of Contact Binaries | 
	 
	
		| Volume: | 
		496, Living Together: Planets, Host Stars and Binaries | 
	 
	
		| Page: | 
		114 | 
	 
	
		| Authors: | 
		Demircan, O.; Bulut, İ | 
	 
	
	
		| Abstract: | 
		Period changes in contact binaries obtained by the analysis of times of eclipse are often found to be chaotic in nature. However, they may be representable by a few cyclic changes superposed on a secular  change. The cyclic changes are most likely caused  by third components revolving around the contact binaries. This contribution shows some typical examples of the period changes in contact binaries. | 
	 
	
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