conference paper published in 1976

scientific article published in June 1991

conference paper published in 2001

scientific article published in 1993

conference paper published in 1982

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conference paper published in 1989

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scientific article published in February 1996

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conference paper published in 1983

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conference paper published in 1992

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conference paper published in 1990

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book section published in 1988

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journal article from 'Proceedings of Lunar and Planetary Science' published in 1992

scientific article published on 30 March 1987

scientific article published in January 2001

scientific article published in April 1989

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conference paper published in 1998

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scholarly article by Paul Spudis published in January 1985

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book published in 1976

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article by Graham Ryder published 1990 in Eos

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conference paper published in 1984

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scientific article published in Nature

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article by Graham Ryder et al published 1991 in Geology

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conference paper published in 1996

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scientific article published in 1996

conference paper published in 1984

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