A refinement of a theorem of Schur on primes in arithmetic progressions II
Volume 12 / 1966
                    
                    
                        Acta Arithmetica 12 (1966), 97-109                    
                                        
                        DOI: 10.4064/aa-12-1-97-109                    
                                    
                                                                
                             
             
                                                             
                                                             
                                                             
                                                             
                                                             
                                                             
                                                         
                                                            