Addition to the paper "On some theorems of S. Saks"
Volume 17 / 1958
                    
                    
                        Studia Mathematica 17 (1958), 69                    
                                        
                        DOI: 10.4064/sm-17-1-69                    
                                    
                                                                
                             
             
                                                             
                                                             
                                                             
                                                             
                                                             
                                                             
                                                         
                                                            