*Vertices 4
1 "西北农林科技大学学报" 0.0 0.0 0.0 x_fact 3.600000 y_fact 39.200000
2 "畜牧与兽医" 0.0 0.0 0.0 x_fact 4.000000 y_fact 22.000000
3 "中国草食动物" 0.0 0.0 0.0 x_fact 10.400000 y_fact 26.000000
4 "中国畜牧杂志" 0.0 0.0 0.0 x_fact 4.000000 y_fact 12.800000
*Matrix 
0.000000 0.000000 0.000000 0.000000 
0.000000 0.000000 0.223272 0.347160 
0.000000 0.223272 0.000000 0.536442 
0.000000 0.347160 0.536442 0.000000