Our authors
| № | Country | Authors |
| 1 | Argentina | 1 |
| 2 | Belarus | 2 |
| 3 | Venezuela | 1 |
| 4 | Germany | 3 |
| 5 | Spain | 8 |
| 6 | Columbia | 1 |
| 7 | Cuba | 1 |
| 8 | Latvia | 1 |
| 9 | Lithuania | 1 |
| 10 | Mexico | 1 |
| 11 | Peru | 2 |
| 12 | Poland | 2 |
| 13 | Russia | 14 |
| 14 | USA | 7 |
| 15 | Turkey | 1 |
| 16 | Ukraine | 6 |
| 17 | Uruguay | 1 |
| 18 | France | 1 |
| 19 | Sweden | 1 |
| 20 | Estonia | 1 |
| 21 | Japan | 1 |