Some problems concerning stability of fixed points
Tom 27 / 1973
                    
                    
                        Colloquium Mathematicum 27 (1973), 263-268                    
                                        
                        DOI: 10.4064/cm-27-2-263-268                    
                                    
                                                                
                             
             
                                                             
                                                             
                                                             
                                                             
                                                             
                                                             
                                                         
                                                            