Algebraic properties of mapping class groups of surfaces
Volume 18 / 1986
                    
                    
                        Banach Center Publications 18 (1986), 15-35                    
                                        
                        DOI: 10.4064/-18-1-15-35                    
                                    
                                                                
                             
             
                                                             
                                                             
                                                             
                                                             
                                                             
                                                             
                                                         
                                                            