CX.1 Phenomena / themes (198 manuscripts in subfields)
CX.2 Physical and Chemical systems: Atomic-Molecular and Condensed Matter Systems (30 manuscripts in subfields)
CX.3 Biological systems (127 manuscripts in subfields)
CX.4 Human Systems (182 manuscripts in subfields)
CX.6 Engineered and Artificial Systems (123 manuscripts in subfields)