*Vertices 3
1 "西北林学院学报" 0.0 0.0 0.0 x_fact 7.104413 y_fact 14.962325
2 "林业科学" 0.0 0.0 0.0 x_fact 8.611410 y_fact 23.358450
3 "生态学报" 0.0 0.0 0.0 x_fact 4.843918 y_fact 61.679225
*Matrix 
0.000000 0.579946 0.405804 
0.579946 0.000000 0.510141 
0.405804 0.510141 0.000000