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. Author manuscript; available in PMC: 2008 Dec 10.
Published in final edited form as: J Comput Phys. 2007 Dec 10;227(2):1246–1266. doi: 10.1016/j.jcp.2007.09.001

Fig. 4.

Fig. 4

The relative errors of the improved fourth-order image approximation in the reaction field at 21 observation points equally spaced on the x-axis, from −1 to 1, for six different source locations.

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