%0 Journal Article %A How Guan Aun %A Denis Wong Chee Keong %T Group Codes Defined Using Extra-Specialp-Group of Orderp3 %J Bulletin of the Malaysian Mathematical Society %D 2004 %V 27 %N 2 %U http://geodesic.mathdoc.fr/item/BMMS_2004_27_2_a7/ %F BMMS_2004_27_2_a7