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. 2012 Jan 17;7(1):e29759. doi: 10.1371/journal.pone.0029759

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Ciszak et al.

This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are properly credited.

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A. The force of attraction, , and the force of repulsion, . B. The effective force associated with each root being a sum of profiles shown in A. Filled circles indicate the position of roots.

Inline graphic — A. The force of attraction, , and the force of repulsion, . B. The effective force associated with each root being a sum of profiles shown in A. Filled circles indicate the position of roots.