D. C. Ford, H. P. Schwarcz, J. J. Drake, M. Gascoyne, R. S. Harmon, A. G. Latham, Estimates of the Age of the Existing Relief within the Southern Rocky Mountains of Canada, Arctic and Alpine Research, Vol. 13, No. 1 (Feb., 1981), pp. 1-10
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Ford et al. (1981) studied this question.
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