Description
CSPRD03:
STIX Version 2.1
Committee Specification Draft 04 / Public Review Draft 03
20 February 2020
https://docs.oasis-open.org/cti/stix/v2.1/csprd03/stix-v2.1-csprd03.docx
https://docs.oasis-open.org/cti/stix/v2.1/csprd03/stix-v2.1-csprd03.html
https://docs.oasis-open.org/cti/stix/v2.1/csprd03/stix-v2.1-csprd03.pdf