| Autori | Titlu | Publicatia | An aparitie |
| CRUDU ION | A PRINCIPLE OF TRIBOSZSTEMATIZATION AND TRIBOMODELLING | PROC. OF INTERNATIONAL CONFERENCE ON TRIBOLOGY | 1999 |
| CRUDU ION | ON THE CONCEPT OF STATE IN STUDYING SLIDING TRIBOSYSTEM MATERIALS | PROC. OF INTERNATIONAL CONFERENCE ON TRIBOLOGY | 1998 |
| CRUDU ION, SIMIONOV MIHAI | THE TENSION STATE IN THE SUPERFICIAL LAYER IN THE VIBRATION CAVITATION CASE | PROC. OF INTERNATIONAL CONFERENCE ON TRIBOLOGY | 1998 |