Our authors
| № | Country | Authors |
| 1 | Bulgaria | 2 |
| 2 | Hungary | 1 |
| 3 | Ghana | 1 |
| 4 | India | 4 |
| 5 | Spain | 3 |
| 6 | Italy | 1 |
| 7 | Canada | 2 |
| 8 | China (PRC) | 5 |
| 9 | Malaysia | 2 |
| 10 | Morocco | 1 |
| 11 | Nigeria | 1 |
| 12 | Oman | 2 |
| 13 | Pakistan | 12 |
| 14 | Russia | 22 |
| 15 | USA | 10 |
| 16 | Saudi Arabia | 1 |
| 17 | Slovakia | 5 |
| 18 | Thailand | 1 |
| 19 | Ukraine | 7 |
| 20 | Ethiopia | 1 |