*Vertices 4
1 "AcmTDatabaseSyst" 0.0 0.0 0.0 x_fact 3.428571 y_fact 8.571429
2 "SigmodRec" 0.0 0.0 0.0 x_fact 3.857143 y_fact 5.571429
3 "TheorComputSci" 0.0 0.0 0.0 x_fact 4.000000 y_fact 76.285714
4 "VldbJ" 0.0 0.0 0.0 x_fact 4.714286 y_fact 9.571429
*Matrix 
0.000000 0.775216 0.000000 0.736905 
0.775216 0.000000 0.275622 0.905528 
0.000000 0.275622 0.000000 0.000000 
0.736905 0.905528 0.000000 0.000000