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Baker RJ, Bellen JC, Fornasiero D, Penglis S.Baker RJ, et al. Among authors: bellen jc.Int J Rad Appl Instrum B. 1986;13(5):527-32. doi: 10.1016/0883-2897(86)90133-9.Int J Rad Appl Instrum B. 1986.PMID: 3818317
Baker RJ, McLaren AB, Bellen JC, Penglis S.Baker RJ, et al. Among authors: bellen jc.Int J Rad Appl Instrum B. 1987;14(2):123-6. doi: 10.1016/0883-2897(87)90142-5.Int J Rad Appl Instrum B. 1987.PMID: 3110109