Ashwill, Thomas D.; Sutherland, Herbert J.; Berg, Dale E. «A retrospective of VAWT technology». U.S. Department of Energy
Office of Scientific and Technical Information. Technical Report, 2012. DOI: 10.2172/1035336.
Ashwill, Thomas D.; Sutherland, Herbert J.; Berg, Dale E. «A retrospective of VAWT technology». U.S. Department of Energy
Office of Scientific and Technical Information. Technical Report, 2012. DOI: 10.2172/1035336.