Pekka Masonen, Humphrey J. Fisher: Not quite Venus from the waves: The Almoravid conquest of Ghana in the modern historiography of Western Africa. In: History in Africa. 23, 1996, S. 197–232 (JSTOR:3171941; arts.ualberta.ca (Memento vom 7. September 2011 im Internet Archive); PDF; 1,07 MB).
Pekka Masonen, Humphrey J. Fisher: Not quite Venus from the waves: The Almoravid conquest of Ghana in the modern historiography of Western Africa. In: History in Africa. 23, 1996, S. 197–232 (JSTOR:3171941; arts.ualberta.ca (Memento vom 7. September 2011 im Internet Archive); PDF; 1,07 MB).