I've just started reading about them today. I've been trying to find some reliable sources, but can't seem to find any.

http://paranormal.about.com/od/ancienta ... 0198_3.htm
http://members.aol.com/pgrsel2/dropas/saitsew.htm

After looking further it seems the story is a complete hoax. If looked for the original publications, but can only find various UFO sites mentioning them. Even searching for scientists names give me nothing. If anyone finds the origins of this story then I wouldn't mind reading it.