| synchrotron self compton | SSC | 81 | 7 | 1.002195 | 9901324,9901106,etc |
| proportional counter array | PCA | 60 | 6 | 2.002106 | 9901125,9901161,etc |
| high resolution imager | HRI | 90 | 6 | 1.001446 | 9901348,9901132,etc |
| all sky monitor | ASM | 24 | 5 | 1.002492 | 9901125,9901404,etc |
| two dimensional | 2D | 34 | 4 | 2.001552 | 9901108,9901279,etc |
| friedmann robertson walker | FRW | 26 | 4 | 2.001441 | 9901040,9901212,etc |
| space telescope imaging spectrograph | STIS | 33 | 4 | 2.001433 | 9901320,9901280,etc |
| signal to noise | S/N | 14 | 4 | 1.000182 | 9901263,9901101,etc |
| power density spectra | PDS | 11 | 4 | 1.000582 | 9901050,9901162,etc |
| inverse compton | IC | 137 | 3 | 1.003085 | 9901018,9901061,etc |
| point source catalog | PSC | 19 | 3 | 2.000991 | 9901419,9901126,etc |
| colour magnitude diagram | CMD | 103 | 3 | 2.001158 | 9901245,9901252,etc |
| kelvin helmholtz | KH | 53 | 3 | 2.002223 | 9901166,9901379,etc |
| versatile advection code | VAC | 27 | 3 | 2.000959 | 9901166,9901380,etc |
| wide field cameras | WFC | 22 | 3 | 2.001527 | 9901413,9901233,etc |
| photon dominated region | PDR | 31 | 3 | 2.000387 | 9901134,9901133,etc |
| high magnification event | HME | 100 | 3 | 2.003732 | 9901341,9901336,etc |
| kolmogorov smirnov | KS | 25 | 3 | 2.001362 | 9901341,9901214,etc |
| lyon meudon extragalactic database | LEDA | 33 | 3 | 1.002107 | 9901412,9901214,etc |