*Vertices 4
1 "哈尔滨医科大学学报" 0.0 0.0 0.0 x_fact 0.759013 y_fact 3.415560
2 "卫生研究" 0.0 0.0 0.0 x_fact 1.233397 y_fact 9.487666
3 "中国地方病学杂志" 0.0 0.0 0.0 x_fact 11.290323 y_fact 65.749526
4 "中国地方病防治杂志" 0.0 0.0 0.0 x_fact 10.626186 y_fact 21.347249
*Matrix 
0.000000 0.000000 0.296044 0.000000 
0.000000 0.000000 0.000000 0.000000 
0.296044 0.000000 0.000000 0.791617 
0.000000 0.000000 0.791617 0.000000