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- Prem Rangsiwanichpong, Visiting Scholar 2022, Kasetsart University, Bangkok,Thailand, March-July, 2022
- Agenagnew Asfaw, (Visiting Scholar)Ethiopian Space Science and Technology Institute, June 17-August 16, 2018
- Fikru Fentaw (Visiting Scholar), Addis Ababa Institute of Technology, Addis Ababa University, November 17, 2017-January 17, 2018.
- Antonio Anis, (Visiting Scholar), September, 2016-February, 2017, University of Florence, Italy.
- Belete Berhanu, (Courtesy Research Associate), Addis Ababa Institute of Technology, Addis Ababa University, August 1- October 31, 2013.
- Fitsum Tesfaye, (Courtesy Research Associate), Addis Ababa Institute of Technology, Addis Ababa University, September 1-Nov. 30, 2011.
- Orville Grey, University of West Indies at Mona (Ph. D student), Jamaica, July 2011
- Fiseha Behulu (Courtesy Research Associate), Civil Engineering Department, Roma Tre University, Nov. 2010-October 2011
- P. K. Singh (Fulbright Scholar), Maharana Pratap University of Agriculture and Technology, India, Sep. 2009-Jan. 2010
- Flavio Lupia, Italian National Institute for Agricultural Economics, Italy, July-August, 2009
- Shimelis G. Setegn, Royal Institute of Technology, Sweden, March –Nov. 2009
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