Two-weight mixed norm inequalities for maximal operators and extrapolation results for the fractional maximal operator
Volume 87 / 1987
                    
                    
                        Studia Mathematica 87 (1987), 167-180                    
                                        
                        DOI: 10.4064/sm-87-2-167-180                    
                                    
                                                                
                             
             
                                                             
                                                             
                                                             
                                                             
                                                             
                                                             
                                                         
                                                            