1. Study on growth of trees and stands in intensive monitoring system of forest ecosystems;Badea,2003
2. The decline of silver fir. A symptom of environment change;Barbu,1991
3. Monitoringul intensiv al depunerilor atmosferice in perioada anilor 1997–1998 in 7 ecosisteme forestiere din Romania (Intensive monitoring of atmospheric deposition in the 1997–1998 period in 7 forest ecosystems in Romania);Barbu;Revista Padurilor,2000
4. Monitoring of atmospheric deposition in the forest ecosystems of the Retezat Mountains, Methods and results 2001–2002, Scientific report;Barbu,2001
5. Tropospheric ozone and climate: Past, present and future;Brasseur,2001