A.  Patrut, von Reden, K. F., Mayne, D. H., Lowy, D. A., and Patrut, R. T., ?AMS radiocarbon investigation of the African baobab: Searching for the oldest tree?, Nuclear Instruments & Methods in Physics Research Section B-Beam Interactions with Materials and Atoms, vol. 294, pp. 622-626, 2013.