The Version 1 of the Open Modeling EXchange format (OMEX) specification was published on September 15, 2014 and can be found at:
Version 1 of the OMEX specification
Identifier for this specification is: https://identifiers.org/combine.specifications:omex.version-1
To cite this document use:
Frank T. Bergmann, Nicolas Rodriguez, Nicolas Le Novère. COMBINE archive specification. Available from COMBINE https://identifiers.org/combine.specifications:omex.version-1 (2014)
An important part of OMEX is the manifest file