A solution to the problem of B. V. Rao on Borel structures
Volume 54 / 1987
                    
                    
                        Colloquium Mathematicum 54 (1987), 167-170                    
                                        
                        DOI: 10.4064/cm-54-2-167-170                    
                                    
                                                                
                             
             
                                                             
                                                             
                                                             
                                                             
                                                             
                                                             
                                                         
                                                            