- Elementary Particles, Quantum Field Theory 99
- Quantum Field Theories, String Theory 95
- Quantum Physics 68
- Classical and Quantum Gravitation, Relativity Theory 62
- Science, Humanities and Social Sciences, multidisciplinary 62
- Science, multidisciplinary 61
- Internal Medicine 57
- Life Sciences, general 41
- Nuclear Energy 41
- Biomedicine, general 40
- Cell Biology 40
- Medicine/Public Health, general 38
- Immunology 36
- Cancer Research 35
- Nuclear Physics, Heavy Ions, Hadrons 34
- Astronomy, Astrophysics and Cosmology 33
- Measurement Science and Instrumentation 33
- Oncology 33
- Metallic Materials 32
- Pharmacology/Toxicology 32