*Vertices 3
1 "数学年刊A" 0.0 0.0 0.0 x_fact 20.000000 y_fact 42.857143
2 "数学学报" 0.0 0.0 0.0 x_fact 1.428571 y_fact 1.428571
3 "系统科学与数学" 0.0 0.0 0.0 x_fact 31.428571 y_fact 55.714286
*Matrix 
0.000000 0.752577 0.650414 
0.752577 0.000000 0.341432 
0.650414 0.341432 0.000000