This article is cited in	 
                         14 papers
                         	
			
				On the problem of determining perfect quadratic forms of several variables
		
			S. S. Ryshkov		
			UDC:
			513.82+
511	
	         
	        	
	        
	        
	  	
 English version:
			Proceedings of the Steklov Institute of Mathematics, 1979, 
142, 
233–259	
			Bibliographic databases:
			 	
	
	
	© , 2025