. "It should be noted that the article was a debunking piece intended to show how a much-publicized 1952 Brazilian flying-saucer photograph was created (Smith, op. cit.).In 1978 an Arizona-based group, Ground Saucer Watch (GSW), which specialized in analysis of purported UFO photographs (and which had rejected most as phony), subjected good-quality prints to a computer-processing technique, focusing" . . .