found: Abubakar, Abdulsalami. Nigeria, 1998:t.p. (General Abdulsalami Abubakar; head of state, commander-in-chief of the Armed Forces, Nigeria; appointed 6/9/98 by the Provisional Ruling Council to succeed the former head of state)
found: Development of sustainable agriculture in Sub-Saharan Africa, 1999?:t.p. (Abdulasalami A. Abubakar, Head of State, Federal Republic of Nigeria)
found: General Abdulsalami Alhaji Abubakar (GCFR, CSG), 2012:t.p. (Abdulsalami Alhaji Abubakar (GCFR, CSG))
found: Africa confidential website, viewed Oct. 10, 2013(General Abdulsalami Abubakar; b. June 13, 1942, Minna, Niger State; commander, Third Mechanised Brigade, Nigerian Army, Kano; promoted to Colonel, 1984; 11th president of Nigeria, 1998-99, after Sani Abacha's death; handed power over to elected president Olusegun Obasanjo on May 29, 1999)
