Witold Wolibner (9.IX.1902-9.I.1961)
Volume 10 / 1963
                    
                    
                        Colloquium Mathematicum 10 (1963), 353-360                    
                                        
                        DOI: 10.4064/cm-10-2-353-360                    
                                    
                                                                
                             
             
                                                             
                                                             
                                                             
                                                             
                                                             
                                                             
                                                         
                                                            