Ouyang, Z., et al. "Paleoclimate Cycles Due to Impacts by Extraterrestrial Bodies," in Abstracts for the 54th Annual Meeting of the Meteoritical Society held July 21-26, 1991, in Monterey, California. Houston: Lunar and Planetary Institute, 1991.

Ouyang, Z., et al. "Paleoclimate Cycles Due to Impacts by Extraterrestrial Bodies," in Abstracts for the 54th Annual Meeting of the Meteoritical Society held July 21-26, 1991, in Monterey, California. Houston: Lunar and Planetary Institute, 1991.