| Autori | Titlu | Publicatia | An aparitie |
| CRISTEA V., BACIU C. | AN ECOSYSTEM BASED APPROACH TO URBAN LIFE. | NATUROPA, 94, 1 | 2000 |
| BACIU C., COSMA C., RISTOIU D. (VEZI ANEXA) | CONTINUTUL DE RADON AL APELOR SUBTERANE DIN ZONA MUNICIPIULUI CLUJ-NAPOCA | 100 DE ANI DE HIDROGEOLOGIE MODERNA IN ROMANIA | 2000 |
| COSMA C., BACIU C., RISTOIU D. | SOME ASPECTS OF RADON POTENTIAL IN SOIL AND UNDERGROUND WATERS IN THE SOMESUL MIC HYDROGRAPHIC BASIN | PROC. V-TH INT. CONF. RARE GASES | 1999 |