Federation of American Scientists: Tornado (BAe) - Offers background information, specifications, and photos.

Royal Air Force: Tornado GR4 - From the official Royal Air force site.

armedforces.co.uk: Tornado GR1, GR1A, GR4 & Mid-Life Update - Offers a history of the Tornado, specifications, squadrons, and upgrade information.

armedforces.co.uk: Tornado F3 - The main differences between the F3 and GR1 are the extended fuselage, longer range air intercept Foxhunter Radar (replacing the terrain-following/ground mapping radar of the Tornado GR1) and the armament.

Royal Air Force Marham: The Tornado Era - History of Tornado squadrons at RAF Marham.

Dinger's Aviation Pages: Panavia Tornado - Features artist renderings, photos, and specifications.

Tornado, Panavia - Featuring a histroy of the developemnt of the Tornado.