Metric property of linear sets
Volume 50 / 1961
                    
                    
                        Fundamenta Mathematicae 50 (1961), 13-20                    
                                        
                        DOI: 10.4064/fm-50-1-13-20                    
                                    
                                                                
                             
             
                                                             
                                                             
                                                             
                                                             
                                                             
                                                             
                                                         
                                                            