| First Name | Last Name | Institutions | Articles |
|---|---|---|---|
| Peter Ehizokhale | Okpamen | Elizade University | 1 |
| Akinseye | Olowu | University of Johannesburg | 1 |
| Nduka Lucas | Oluka | Novena University | 1 |
| Abdelmajid | Oumnad | Mohammed V University | 1 |
| Vladimíra | Osadská | VSB - Technical University of Ostrava | 1 |
| Malgorzata | Orłowska | War Studies University | 1 |
| John B. Ochanda | Ogola | University of Venda | 1 |
| Samuel Oluwaseyi | Olorunfemi | Federal University of Technology Akure | 1 |
| Driss | Ouazar | Mohammed V University | 1 |
| Oluwabukunmi Eunice | Obembe | National Open University of Nigeria | 1 |
| Abdesselam | Ouhajjou | Sidi Mohamed Ben Abdellah University | 1 |
| Yerkenazym | Orynbassarova | Karaganda Economic University of Kazpotrebsouz | 1 |
| Mohamed | Ouarani | Mohammed VI Polytechnic University; University of Minnesota |
1 |
| Ufuoma Benson | Ogidiagba | College of Education, Warri | 1 |
| John Lola | Okunola | Redeemer's University | 1 |
| Henry Usunobun | Ogiugo | Ajayi Crowther University | 2 |
| Sunday Oseiweh | Ogbeide | Ambrose Alli University; Elizade University |
3 |
| Trevor Uyi | Omoruyi | University of Chester | 4 |
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