On generalized exponential functions
Volume 13 / 1953
                    
                    
                        Studia Mathematica 13 (1953), 48-50                    
                                        
                        DOI: 10.4064/sm-13-1-48-50                    
                                    
                                                                
                             
             
                                                             
                                                             
                                                             
                                                             
                                                             
                                                             
                                                         
                                                            