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               The International Workshop on 
	 
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 Abstract Ultraluminous X-ray sources remains mysterious despite all the research which was made recently. The simplest explanation, which involves the intermediate-mass black holes, has other substantial problems. On the other hand, the super-Eddington accretion provides explanation, which aims at connecting these sources with observed X-ray binary population. We showed that powering such a source is feasible even in the most extreme case of the system ESO 243-49 HLX-1, which reaches the luminosity of 1.1·1042erg/s. 
 
	  
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