The minimal-norm problem and Pontriagin's maximum principle for Banach spaces, II
Tom 35 / 1970
                    
                    
                        Studia Mathematica 35 (1970), 105-110                    
                                        
                        DOI: 10.4064/sm-35-2-105-110                    
                                    
                                                                
                             
             
                                                             
                                                             
                                                             
                                                             
                                                             
                                                             
                                                         
                                                            