Last update: Thu Aug 8 02:19:04 MDT 2013
@Article{Trefil:1989:CCC,
author = "James Trefil",
title = "Craters, the celestial calling cards",
journal = j-SMITHSONIAN,
volume = "20",
number = "6",
pages = "80--??",
day = "1",
month = sep,
year = "1989",
CODEN = "SMSNA5",
ISSN = "0037-7333 (print), 1930-5508 (electronic)",
ISSN-L = "0037-7333",
bibdate = "Sat Jun 22 09:28:57 MDT 1996",
bibsource = "http://www.math.utah.edu/pub/tex/bib/smithsonian1980.bib;
UnCover library database",
abstract = "As these ``impact structures'' reveal, Earth has often
been visited by massive meteorites, and will be
again.",
acknowledgement = ack-nhfb,
}