[1] [CITE[Systems Biology Markup Language (SBML) Level 3Core - sbml-level-3-version-2-release-2-core.pdf]], [TIME[2019-04-26T19:11:44.000Z]], [TIME[2021-06-09T06:32:40.811Z]] <http://sbml.org/Special/specifications/sbml-level-3/version-2/core/release-2/sbml-level-3-version-2-release-2-core.pdf#page=25>