Remarks on vector sums of Borel sets
Volume 25 / 1972
                    
                    
                        Colloquium Mathematicum 25 (1972), 103-104                    
                                        
                        DOI: 10.4064/cm-25-1-103-104                    
                                    
                                                                
                             
             
                                                             
                                                             
                                                             
                                                             
                                                             
                                                             
                                                         
                                                            