References
- http://www.zeppelin-nt.com
- http://www.zeppelinflug.de
- http://www.zeppelin-museum.de
- "Airship Ground Handling Manual," Zeppelin Luftschifftechnik GmbH, Apr. 2001
- "Airship Flight Manual and Pilot's Operating Handbook, Zeppelin Luftschifftechnik GmbH, Aug 2001.
- http://airship.kari.re.kr “다목적성층권 비행선 개발 홈페이지(한국항공우주연구원)”