| 05.10.-23.12.11 | Euna Gesare Nyarige | Jomo Kenyatta University of Agriculture and Technology, Nairobi, Kenia |
| 06.07.-06.01.12 | Mark Fiecas | Brown University, Providence, USA |
| 15.03.-22.03.10 | Dr. Anthony Waititu Gichuhi | Jomo Kenyatta University of Agriculture and Technology, Nairobi, Kenia |
| 25.04.-03.05.09 | Dr. Baloglu Yazici | Anadolu University, Eskisehir, Turkey |
| 25.11.-26.11.08 | Dr. Siana Halim | Petra Christian University, Indonesia |
| 30.04.-11.05.08 | Prof. Dr. Sukru Acitas | Anadolu University, Eskisehir, Turkey |
| 30.04.-11.05.08 | Prof. Dr. Senay Asma | Anadolu University, Eskisehir, Turkey |
| 20.02.-22.02.08 | Prof. Dr. Lajos Horvath | University of Utah, Salt Lake City, USA |
| 04.11.-10.11.07 | Prof. Dr. Marie Huskova | Karls-Universität Prag |
| 01.10.-30.11.07 | Dr. Peter Mwita | Jomo Kenyatta University of Agriculture and Technology, Nairobi, Kenia |
| 25.07.-29.07.07 | Dr. Janis Valeinis | University of Latvia, Riga |
| 01.06.-31.07.07 | Dr. Jyoti Devkota | Kathmandu University, Nepal |
| 11.12.-16.12.06 | Dr. Hilmar Boehm | Universite Catholique de Louvain, Belgium |
| 11.11.-17.11.06 | Prof. Dr. Susanna Praskova | Karls-Universität Prag |
