Analytic sets and Borel isomorphisms
Tom 108 / 1980
                    
                    
                        Fundamenta Mathematicae 108 (1980), 83-88                    
                                        
                        DOI: 10.4064/fm-108-2-83-88                    
                                    
                                                                
                             
             
                                                             
                                                             
                                                             
                                                             
                                                             
                                                             
                                                         
                                                            