SBML Level 2 Version 4 Release 1

Version 4 Release 1 of Level 2 of SBML was published on 22 September 2008.

The specification can be found at:

Identifier for this specification is:

To cite this document, please use:

Michael Hucka, Stefan Hoops, Sarah M. Keating, Nicolas Le Novère, Sven Sahle, Darren J. Wilkinson. Systems Biology Markup Language (SBML) Level 2: Structures and Facilities for Model Definitions. Available from COMBINE <> (2008)