| Referee | Country |  |
W | D | L |  |
 |
 |
 |
|---|---|---|---|---|---|---|---|---|---|
| Stoyan Arsov |
|
1 | 1 | 0 | 0 | 0 | 0 | 0 | 0 |
| Lothar D'Hondt |
|
1 | 0 | 0 | 1 | 0 | 0 | 0 | 0 |
| Georgi Dimitrov |
|
1 | 0 | 0 | 1 | 0 | 0 | 0 | 0 |
| Georgi Kabakov |
|
1 | 1 | 0 | 0 | 0 | 0 | 0 | 0 |
