1. Statistical Review of World Energy June 2011, http://www.bp.com/liveassets/bp_internet/globalbp/globalbp_uk_english/reports_and_publications/statistical_energy_review_2011/STAGING/local_assets/pdf/statistical_review_of_world_energy_full_report_2011.pdf
2. Ammonia as a fuel for SI engine;Liu,2003
3. Ammonia as a spark ignition engine fuel: theory and application;Starkman,1966
4. Flame-propagation rates in a ammonia-air combustion at high pressure;Starkman,1967
5. A feasibility study of implementing an ammonia economy;Bartels,2008