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Robinson RG, Spicer JA, Preston DF, Wegst AV, Martin NL.Robinson RG, et al. Among authors: preston df.Int J Rad Appl Instrum B. 1987;14(3):219-22. doi: 10.1016/0883-2897(87)90045-6.Int J Rad Appl Instrum B. 1987.PMID: 3667305
Martin NL, Robinson RG, Preston DF.Martin NL, et al. Among authors: preston df.J Kans Med Soc. 1979 Nov;80(11):597-9.J Kans Med Soc. 1979.PMID: 533819No abstract available.