*Vertices 3
1 "中华肾脏病杂志" 0.0 0.0 0.0 x_fact 6.118143 y_fact 17.299578
2 "中华医学杂志" 0.0 0.0 0.0 x_fact 2.109705 y_fact 35.232068
3 "肾脏病与透析肾移植杂志" 0.0 0.0 0.0 x_fact 8.227848 y_fact 47.468354
*Matrix 
0.000000 0.236132 0.460828 
0.236132 0.000000 0.000000 
0.460828 0.000000 0.000000