On the number of representations of a positive integer by a binary quadratic form
Tom 114 / 2004
                    
                    
                        Acta Arithmetica 114 (2004), 87-98                    
                                        
                        MSC: Primary 11E16, 11E25.                    
                                        
                        DOI: 10.4064/aa114-1-6                    
                                    
                                                                
                             
             
                                                             
                                                             
                                                             
                                                             
                                                             
                                                             
                                                         
                                                            