Spline characterizations of H¹
Volume 75 / 1983
                    
                    
                        Studia Mathematica 75 (1983), 183-192                    
                                        
                        DOI: 10.4064/sm-75-2-183-192                    
                                    
                                                                
                             
             
                                                             
                                                             
                                                             
                                                             
                                                             
                                                             
                                                         
                                                            