The first research visit granted by German DAAD, at Leibniz University of Hannover, Germany
From: March, 2002 - May, 2002

A short-term Lecturing visit granted by the Minister of Education of Rwanda, at National University of Rwanda
From: 10/06/2003 - 30/07/2003

My second research visit granted by German DAAD, at Leibniz University of Hannover, Germany

From: May,2007 - June, 2007