Series of positive terms
Tom 64 / 2004
                    
                    
                        Banach Center Publications 64 (2004), 29-38                    
                                        
                        MSC: 26D15.                    
                                        
                        DOI: 10.4064/bc64-0-3                    
                                    
                                                                
                             
             
                                                             
                                                             
                                                             
                                                             
                                                             
                                                             
                                                         
                                                            