Independence with respect to families of characters
Tom 56 / 1988
                    
                    
                        Colloquium Mathematicum 56 (1988), 383-392                    
                                        
                        DOI: 10.4064/cm-56-2-383-392                    
                                    
                                                                
                             
             
                                                             
                                                             
                                                             
                                                             
                                                             
                                                             
                                                         
                                                            