On the differentiability of solutions of quasilinear elliptic equations
Volume 64 / 1993
                    
                    
                        Colloquium Mathematicum 64 (1993), 287-291                    
                                        
                        DOI: 10.4064/cm-64-2-287-291                    
                                    
                                                                
                             
             
                                                             
                                                             
                                                             
                                                             
                                                             
                                                             
                                                         
                                                            