Discussiones Mathematicae Graph Theory 31(3) (2011)
493-507

doi: 10.7151/dmgt.1560

A.P. Santhakumaran and S.V. Ullas Chandran
Department of Mathematics |

**Keywords:** strong product, geodetic number, hull number, extreme hull graph

**2010 Mathematics Subject Classification:** 05C12.

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Received 23 September 2009

Revised 23 July 2010

Accepted 23 July 2010