| Title | Source |
| Optical Fiber Technology | ELSIVIER |
| Optical Materials | ELSIVIER |
| Optics & Laser Technology | ELSIVIER |
| Optics and Lasers in Engineering | ELSIVIER |
| Optics Communications | ELSIVIER |
| Optics Technology | ELSIVIER |
| Optik - International Journal for Light and Electron Optics | ELSIVIER |
| Organic & Biomolecular Chemistry | RSC |
| Organic Electronics | ELSIVIER |
| Organic Letters | ACS |
| Organic Mass Spectrometry 1968-1994 | Wiley |
| Organic Process Research & Development | ACS |
| Organometallics | ACS |
