| Rank | Abbreviation | Meaning |
|---|
| ***** | SIGMA | Science de l’Information Géoréférencée pour la Maîtrise de l’environnement et l’Aménagement des territoires
| |
| **** | SIGMA | Software For Interactive Graphics And Model Analysis
| |
| **** | SIGMA | Socio-Sexual Investigations of Gay Men and Aids
| |
| ** | SIGMA | Gas-Particle Interactions in a Microgravity Flow Cell
| |
| ** | SIGMA | Sequential Information Gathering in Machines and Animals
| |
| * | SIGMA | Sediment Identification for Geotechnics by Marine Acoustics
| |
| * | SIGMA | Strategic Information for Global Markets in Agrochemicals
| |