Geodesic
Minimal non-selfcentric radially-maximal graphs of radius 4
Discussiones Mathematicae. Graph Theory, Tome 27 (2007) no. 3, pp. 603-610.

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There is a hypothesis that a non-selfcentric radially-maximal graph of radius r has at least 3r-1 vertices. Using some recent results we prove this hypothesis for r = 4.
Keywords: non-selfcentric, radially-maximal, critical, center, radius, planar graph 
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Knor, Martin. Minimal non-selfcentric radially-maximal graphs of radius 4. Discussiones Mathematicae. Graph Theory, Tome 27 (2007) no. 3, pp. 603-610. http://geodesic.mathdoc.fr/item/DMGT_2007_27_3_a17/

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