On normal sets of numbers
Volume 20 / 1972
                    
                    
                        Acta Arithmetica 20 (1972), 147-154                    
                                        
                        DOI: 10.4064/aa-20-2-147-154                    
                                    
                                                                
                             
             
                                                             
                                                             
                                                             
                                                             
                                                             
                                                             
                                                         
                                                            