*Vertices 4
1 "JGeophysRes" 0.0 0.0 0.0 x_fact 12.028297 y_fact 72.935294
2 "Nature" 0.0 0.0 0.0 x_fact 5.709188 y_fact 13.914072
3 "SAfrJSci" 0.0 0.0 0.0 x_fact 0.406614 y_fact 0.742692
4 "Science" 0.0 0.0 0.0 x_fact 5.391781 y_fact 12.407941
*Matrix 
0.000000 0.222791 0.349576 0.261383 
0.222791 0.000000 0.542753 0.884370 
0.349576 0.542753 0.000000 0.459140 
0.261383 0.884370 0.459140 0.000000