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Shaw, C. G., D. L. Ergun, M. S. V. Lysel, W. W. Peppler, J. T. Dobbins, W. C. Zarnstorff, P. D. Myerowitz, et al. “QUANTITATION TECHNIQUES IN DIGITAL SUBTRACTION VIDEOANGIOGRAPHY.” Proceedings of SPIE - The International Society for Optical Engineering 314 (1981): 121–29.

Shaw CG, Ergun DL, Lysel MSV, Peppler WW, Dobbins JT, Zarnstorff WC, et al. QUANTITATION TECHNIQUES IN DIGITAL SUBTRACTION VIDEOANGIOGRAPHY. Proceedings of SPIE - The International Society for Optical Engineering. 1981;314:121–9.

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Shaw CG, Ergun DL, Lysel MSV, Peppler WW, Dobbins JT, Zarnstorff WC, Myerowitz PD, Swanson DK, Lasser TA, Mistretta CA, Dhanani SP, Strother CM, Crummy AB. QUANTITATION TECHNIQUES IN DIGITAL SUBTRACTION VIDEOANGIOGRAPHY. Proceedings of SPIE - The International Society for Optical Engineering. 1981;314:121–129.