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Elegba.„Import/export control of radioactive sources in Nigeria“ (English). Safety and security of radioactive sources: Towards a global system for the continuous control of sources throughout their life cycle. Proceedings of an international conference (2006). 2021-yil 20-sentyabrda asl nusxadan arxivlangan. Qaraldi: 2021-yil 27-fevral.
Elegba.„Import/export control of radioactive sources in Nigeria“ (English). Safety and security of radioactive sources: Towards a global system for the continuous control of sources throughout their life cycle. Proceedings of an international conference (2006). 2021-yil 20-sentyabrda asl nusxadan arxivlangan. Qaraldi: 2021-yil 27-fevral.