*Vertices 8
1 "ChronobiolInt" 0.0 0.0 0.0 x_fact 0.697120 y_fact 1.310586
2 "Ergonomics" 0.0 0.0 0.0 x_fact 0.086189 y_fact 1.163557
3 "JBiolRhythm" 0.0 0.0 0.0 x_fact 1.259886 y_fact 1.622389
4 "Nature" 0.0 0.0 0.0 x_fact 8.679781 y_fact 18.981951
5 "PNatlAcadSciUsa" 0.0 0.0 0.0 x_fact 28.199148 y_fact 51.728858
6 "PhysiolBehav" 0.0 0.0 0.0 x_fact 1.731393 y_fact 4.633948
7 "Science" 0.0 0.0 0.0 x_fact 8.084060 y_fact 16.700466
8 "Sleep" 0.0 0.0 0.0 x_fact 0.902454 y_fact 3.858244
*Matrix 
0.000000 0.000000 0.449150 0.207952 0.231114 0.219075 0.231543 0.241074 
0.000000 0.000000 0.000000 0.000000 0.000000 0.000000 0.000000 0.000000 
0.449150 0.000000 0.000000 0.714457 0.770610 0.375743 0.817020 0.000000 
0.207952 0.000000 0.714457 0.000000 0.785946 0.291943 0.891885 0.000000 
0.231114 0.000000 0.770610 0.785946 0.000000 0.287643 0.788441 0.000000 
0.219075 0.000000 0.375743 0.291943 0.287643 0.000000 0.296905 0.000000 
0.231543 0.000000 0.817020 0.891885 0.788441 0.296905 0.000000 0.000000 
0.241074 0.000000 0.000000 0.000000 0.000000 0.000000 0.000000 0.000000