1. Agajelu, S.I. and Moka, E.C. On the origin of the Nigerian Geodetic Network. Paper presented at the 22nd Annual General Meeting of the Nigerian Institution of Surveyors. Kaduna, Nigeria.
2. Ezeigbo, C.U. and Edoga, A.C. The Scale and Orientation Problems in Geodetic Positioning in Nigeria. Proceedings of the International Workshop on Geodetic Positioning, UNILAG. pp.27–41.
3. The Role of the Geoid in Datum Definitions