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van Waarde A, Meeder JG, Blanksma PK, Bouwer J, Visser GM, Elsinga PH, Paans AM, Vaalburg W, Lie KI.van Waarde A, et al. Among authors: meeder jg.Int J Rad Appl Instrum B. 1992 Oct;19(7):711-8. doi: 10.1016/0883-2897(92)90130-q.Int J Rad Appl Instrum B. 1992.PMID: 1356953