F-spaces with a basis which is which is shrinking but not hyper-shrinking
Volume 64 / 1979
                    
                    
                        Studia Mathematica 64 (1979), 97-104                    
                                        
                        DOI: 10.4064/sm-64-2-97-104                    
                                    
                                                                
                             
             
                                                             
                                                             
                                                             
                                                             
                                                             
                                                             
                                                         
                                                            