Our authors
| № | Country | Authors |
| 1 | Algeria | 2 |
| 2 | Bulgaria | 2 |
| 3 | Brazil | 2 |
| 4 | Hungary | 1 |
| 5 | Vietnam | 2 |
| 6 | Ghana | 1 |
| 7 | Egypt | 1 |
| 8 | India | 6 |
| 9 | Indonesia | 6 |
| 10 | Spain | 6 |
| 11 | Italy | 1 |
| 12 | Kazakhstan | 1 |
| 13 | Canada | 3 |
| 14 | China (PRC) | 5 |
| 15 | Malaysia | 5 |
| 16 | Morocco | 1 |
| 17 | Mexico | 2 |
| 18 | Nigeria | 2 |
| 19 | Oman | 2 |
| 20 | Pakistan | 24 |
| 21 | Poland | 1 |
| 22 | Portugal | 1 |
| 23 | Russia | 42 |
| 24 | USA | 12 |
| 25 | Saudi Arabia | 1 |
| 26 | Slovakia | 8 |
| 27 | Thailand | 1 |
| 28 | Ukraine | 19 |
| 29 | Czech Republic | 2 |
| 30 | Ethiopia | 1 |