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Bielajew AF, Rogers DW.Bielajew AF, et al. Among authors: rogers dw.Med Phys. 1992 Mar-Apr;19(2):303-4. doi: 10.1118/1.596860.Med Phys. 1992.PMID: 1584121
Rogers DW.Rogers DW.Int J Rad Appl Instrum A. 1991;42(10):965-74. doi: 10.1016/0883-2889(91)90053-4.Int J Rad Appl Instrum A. 1991.PMID: 1661717Review.