text: * Post doctorate visit on a senior scholar Fulbright fellowship University of Massachusetts (September – December 1985)
  * Post doctorate visit on Association of Commonwealth Universities Fellowship University of Leeds, UK (October 1984 – July 1985)
  * Visiting post-doctorate fellow at the University of Reading, UK (1980)
  In 2010 he was selected and worked as an expert in Europe-Africa Quality Connect: A collaborative project in five African universities between European Universities Association (EUA) and the Association of African Universities (AAU), sponsored by European Commission.