1. Climate change 2014 synthesis report;Intergovernmental Panel on Climate Change,2014
2. Second IMO GHG Study 2009;International Maritime Organization,2009
3. Vrooman D. Vibrating propeller. US Patent 22,097. Patented November 15, 1858.
4. Wave energy for propelling craft – nothing new;Burnett;Naval Archit,1979
5. The foilpropeller, wave power for propulsion;Jakobsen,1981