Bibliography

1. Http://military.topcities.com

2. Http://www.tgplanes.com

3. The World's Great Attack Aircraft, By. Gallery Books, Imprint of W.H. Smith Publishers Inc.

112 Madison Avenue, New York City 10016

4. Popular Mechanics, January 2001 issue, page 50

5. Http://www.Lockheedmartin.com

6. Http://www.geocities.com/Capecaneveral/Lab/8004/F22.html

7. Http://www.af.mil/news/factsheets/B_2_Spirit.html

8.  Http://www.sunspot.net   (online periodical)

9. Grolier Multimedia Encyclopedia.  Sec. Airplanes