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		| Paper: | 
		Pre-main sequence delta Scuti variables | 
	 
	
		| Volume: | 
		256, Observational Aspects of Pulsating B and A Stars | 
	 
	
		| Page: | 
		137 | 
	 
	
		| Authors: | 
		Rodriguez, E. | 
	 
	
	
		| Abstract: | 
		During the last few years, a number of delta Sct pulsators have been discovered in a pre-main sequence stage of evolution. The consequences and implications derived from this finding are extremely important. In this work, the present status of this subgroup of variables is up-dated and revised. | 
	 
	
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