Graph A is a graph drawing self-reference graph. There is a node for every paper in the proceedings of GD94 to GD2000, and an arc, if a paper
refers to another GD paper.
(Please, check the graph for correctness and report errors to
brandenb@fmi.uni-passau.de)
Display the dependencies within the GD symposia. Are there hidden structures?
Graph A in GML-format.