- Katlo OROMENG, Botswana International University of Science and Technology, Botswana, March-September 2024
- Frankline Besonge BOKANDA, Botswana International University of Science and Technology, Botswana, March-August 2024
- Prof. Diana Elizabeth FERNÁNDEZ, Departamento de Ciencias Geológicas, Universidad de Buenos Aires, Argentina, February 2024
- Prof. Tsegazeabe Hadush HAILESELASSIE, University of Mekelle, Ethiopia, June 2023
- Prof. Miruts HAGOS, University of Mekelle, Ethiopia, April 2019; June 2023
- Prof. Solomon HISCHE, University of Mekelle, Ethiopia, April 2019; June 2023
- Oleksandra SHCHESRBYNA, Warsaw University of Life Sciences - SGGW, Poland, July-September 2022
- Lucas JAQUIER, Université Paris-Saclay, France, June-July 2022
- Prof. Fulvio FRANCHI, Botswana International University of Science And Technology-BIUST, Botswana, December 2021
- Dr. Frederic FOUCHER, Center de Biophysique Moléculaire, CNRS-Orleans, France, November 2021
- Prof. Kelali TEKLE, University of Mekelle, Ethiopia, April 2019
- Dr. Antoine CAMINITI, Center d'Etudes e de Recherche de Djibouti, Dept. Hydrocarbon Exploration, Djibouti, March 2019
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