Comment on "Systematics of transfer/breakup yields for weakly bound light nuclei"

In a recent paper the systematics for the yield of beam velocity a particles from a number of weakly bound light nuclei have been explored. In this paper the a particle yields are continuously referred to as arising from breakup. We caution that these experimental cross sections on which the analysis in the paper is based do not reflect breakup alone, but include yield from at least three different reaction processes.