A duel with silent-noisy gun versus noisy gun
Tom 17 / 1967
                    
                    
                        Colloquium Mathematicum 17 (1967), 131-146                    
                                        
                        DOI: 10.4064/cm-17-1-131-146                    
                                    
                                                                
                             
             
                                                             
                                                             
                                                             
                                                             
                                                             
                                                             
                                                         
                                                            