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McCallum, James L.; Cook, Peter. G.; Dogramaci, Shawan; Purtschert, Roland; Simmons, Craig T.; Burk, Lawrence (2017). Identifying modern and historic recharge events from tracer-derived groundwater age distributions. Water resources research, 53(2), pp. 1039-1056. American Geophysical Union 10.1002/2016WR019839
