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3. Badea, O., and Neagu, S. (2011) Volume growth losses for trees and forest stands in the Romanian Intensive Monitoring System. Proceedings of Romanian Academy 3.
4. Badea, O., Neagu, S., Bytnerowicz, A., Silaghi, D., Barbu, I., Iacoban, C., Popescu, F., Andrei, M., Preda, E., Iacob, C., Dumitru, I., Iuncu, H., Vezeanu, C., & Huber, V. (2011). Long-term monitoring of air pollution effects on selected forest ecosystems in the Bucegi-Piatra Craiului and Retezat Mountains, southern Carpathians (Romania). iForest—Biogeosciences and Forestry, 4, 49–60.
5. Badea, O., Neagu, S., Leahu, I., and Iacob, C. (2008) Inventory of growth and yield of trees in long term ecological research sites. In Manual on methodology for long term monitoring of forest ecosystems status under air pollution and climate change influences. Edited by O. Badea. Ed. Silvica, Bucharest. pp. 21-30.