| русский | rus-000 |
| экспериментальное исследование | |
| العربية | arb-000 | دراسة رائدة |
| 普通话 | cmn-000 | 试点研究 |
| English | eng-000 | experimental investigation |
| English | eng-000 | experimental study |
| English | eng-000 | pilot research |
| English | eng-000 | pilot study |
| español | spa-000 | estudio piloto |