*Vertices 4
1 "药学学报" 0.0 0.0 0.0 x_fact 0.000000 y_fact 9.779180
2 "河北医科大学学报" 0.0 0.0 0.0 x_fact 3.470032 y_fact 4.495268
3 "中华放射学杂志" 0.0 0.0 0.0 x_fact 1.813880 y_fact 40.694006
4 "实用放射学杂志" 0.0 0.0 0.0 x_fact 20.031546 y_fact 45.031546
*Matrix 
0.000000 0.592583 0.000000 0.000000 
0.592583 0.000000 0.475402 0.665211 
0.000000 0.475402 0.000000 0.659537 
0.000000 0.665211 0.659537 0.000000