This cluster graph shows the co-authors (green circles) and
                            top co-authors of co-authors (blue circles) of
                            
 (red circle).
                            The size of a circle is proportional to the number of
                            publications that author has. The thickness of a
                            line connecting two authors' names is proportional to the
                            number of publications that they share. Options for
                            customizing this network view are listed below the graph.
                            
                                To return to the graph,
                                click 
here.