Gamespot: Tempest X3 - "While Tempest may have been a great game in 1981, this update for the 1990s doesn't really add anything worthwhile." Review of the Playstation version by Jeff Gerstmann. - http://www.gamespot.com/ps/action/tempestx3/review.html
GameSpy: Tempest - Information on the history and evolution of the game concept to different platforms. - http://www.gamespy.com/articles/488/488814p1.html
GameArchive: Atari Tempest - Information on the arcade version includes designer interview, troubleshooting flowchart, and cheats. - http://www.gamearchive.com/Video_Games/Manufacturers/Atari/tempest.html