A note on positive definite functions
Tom 36 / 1970
                    
                    
                        Studia Mathematica 36 (1970), 223-226                    
                                        
                        DOI: 10.4064/sm-36-3-223-226                    
                                    
                                                                
                             
             
                                                             
                                                             
                                                             
                                                             
                                                             
                                                             
                                                         
                                                            