On the probability that n and f (n) are relatively prime II
Volume 19 / 1971
                    
                    
                        Acta Arithmetica 19 (1971), 175-184                    
                                        
                        DOI: 10.4064/aa-19-2-175-184                    
                                    
                                                                
                             
             
                                                             
                                                             
                                                             
                                                             
                                                             
                                                             
                                                         
                                                            