The importance of being Orlicz
Tom 64 / 2004
                    
                    
                        Banach Center Publications 64 (2004), 21-28                    
                                        
                        MSC: Primary 46E30; Secondary 46E35, 47G10, 47H30.                    
                                        
                        DOI: 10.4064/bc64-0-2