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\bibitem{Hildebrand1997} Hildebrand, A. R., Pilkington, M., Halpenny, J., Cooper, R., Connors, M., Ortiz Aleman, C., Chavez, R.E., Urrutia Fucugauchi, J., Graniel Castro, E., Camara Zi, A., \& Buffler, R.T. (1997). The Chicxulub Crater as Revealed by Gravity and Seismic Surveys.\textit{78}, F398.

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