Our authors
| № | Country | Authors |
| 1 | Algeria | 2 |
| 2 | Bulgaria | 2 |
| 3 | Brazil | 2 |
| 4 | Hungary | 1 |
| 5 | Vietnam | 1 |
| 6 | Ghana | 1 |
| 7 | Egypt | 1 |
| 8 | India | 6 |
| 9 | Indonesia | 2 |
| 10 | Spain | 3 |
| 11 | Italy | 1 |
| 12 | Kazakhstan | 1 |
| 13 | Canada | 3 |
| 14 | China (PRC) | 5 |
| 15 | Malaysia | 3 |
| 16 | Morocco | 1 |
| 17 | Nigeria | 1 |
| 18 | Oman | 2 |
| 19 | Pakistan | 17 |
| 20 | Poland | 1 |
| 21 | Russia | 36 |
| 22 | USA | 11 |
| 23 | Saudi Arabia | 1 |
| 24 | Slovakia | 6 |
| 25 | Thailand | 1 |
| 26 | Ukraine | 16 |
| 27 | Czech Republic | 2 |
| 28 | Ethiopia | 1 |