Dence, M.R., Grieve, R.A.F., and Robertson, P.B., 1977, Terrestrial impact structures, principal characteristics and energy considerations, in Roddy, D.J., Pepin, R.W., and Merrill, R.B., eds., Impact and explosion cratering, planetary, and terrestrial implication, proceedings of the symposium on planetary cratering mechanics: Elmsford, N.Y., Pergamon Press, p. 247-275.
