| First Name | Last Name | Institutions | Articles |
|---|---|---|---|
| Oleksandra | Stoian | Petro Mohyla Black Sea State University | 1 |
| Olena | Verenych | Kyiv National University of Construction and Architecture | 1 |
| Olga | Vandina | Armavir State Pedagogical University | 1 |
| Oksana V. | Savchina | Peoples’ Friendship University of Russia | 1 |
| Oleksandr | Ilchenko | Sumy State University | 1 |
| Oscar | Chakabva | Cape Peninsula University of Technology | 1 |
| Olena | Buchynska | Kyiv National Economic University named after Vadym Hetman | 1 |
| Ogochukwu I. | Nzewi | University of Fort Hare | 1 |
| Olga | Kalacheva | Plekhanov Russian University of Economics | 1 |
| Omar | Alenzi | Imam Abdulrahman Bin Faisal University | 1 |
| Oleksandr | Yunin | Dnipropetrovsk State University of Internal Affairs | 1 |
| Olena | Taranenko | Taras Shevchenko National University of Kyiv | 1 |
| Oľga | Roháčiková | Slovak University of Agriculture in Nitra | 1 |
| Oksana | Brusakova | Kharkiv National University of Internal Affairs | 1 |
| Olga V. | Otto | Altai State University | 1 |
| Osama | Wagdi | Modern University for Technology and Information; International Academy For Engineering & Media Science |
2 |
| Olga | Cherednichenko | Bratislava University of Economics and Management | 2 |
| Oleg V. | Zakharchenko | Odessa State Academy of Civil Engineering and Architecture | 2 |
| Oktay | Mamedov | Southern Federal University | 2 |
| Oxana | Afanasyeva | Financial University under the Government of the Russian Federation; Institute ITKOR |
2 |