1. R.A.F. Grieve, “Terrestrial Impact Structures: Basic Characteristics and Economic Significance, with Emphasis on Hydrocarbon Production,” Oklahoma Geological Survey Circular 100, eds. K.S. Johnson and J.A. Campbell (Norman, OK: U. of Oklahoma, 1997), pp. 3–16.
2. Christian Koeberl, “Impact Cratering: The Mineralogical and Geochemical Evidence,” in Ref. 1, pp. 30–54.
3. David B. Buthman, “Global Hydrocarbon Potential of Impact Structures,” in Ref. 1, pp. 83–99.
4. David B. Buthman, “Global Hydrocarbon Potential of Impact Structures” (abs.) (Paper presented at the 1998 AAPG Annual Convention, Salt Lake City, Utah, 17–20 May 1998).
5. Jim Evans, “Historical Development and Production of the Arbuckle and Exotic Lithologies in the Ames Structure, Oklahoma,” in Ref. 1, pp. 207–213.