1) Nunes, A., Oliveira, G., Cabral, M.S., Branquinho, C. & Correia, O. 2014. Beneficial effect of pine thinning in mixed plantations through changes in the understory functional composition. Ecological Engineering,70, 387-396. (IF=2,580)

2) Oliveira, G., Clemente, A., Nunes, A. & Correia, O. 2014. Suitability and limitations of native species for seed mixtures to re-vegetate degraded areas. Applied Vegetation Science, 17, 726-736. (IF=2,548)

3) Oliveira, G., Clemente, A., Nunes, A. & Correia, O. 2013. Limitations to recruitment of native species in hydroseeding mixtures. Ecological Engineering, 57, 18-26. (IF=2.958)

4) Oliveira, G. & Costa, A. 2012. How resilient is Quercus suber L. to cork harvesting? A review and identification of knowledge gaps. Forest Ecology and Management,  270(1), 257-272. (IF=2.766)

5) Oliveira, G., Nunes, A., Clemente, A. & Correia, O. 2012. Testing germination of species for hydroseeding degraded Mediterranean areas. Restoration Ecology, 20(5), 623-630. (IF=1.934)

6) Oliveira, G., Nunes, A., Clemente, A. & Correia, O. 2011. Effect of substrate treatments on survival and growth of Mediterranean shrubs in a revegetated quarry: An eight-year study. Ecological Engineering, 37(2), 255-259. (IF=3,106)

7) Oliveira, G. & Peñuelas, J. 2004. Effects of winter cold stress on photosynthesis and photochemical efficiency of PSII of the Mediterranean Cistus albidus L. and Quercus ilex L. Plant Ecology, 175(2), 179-191.

8) Oliveira, G. & Peñuelas, J. 2000. Comparative photochemical and phenomorphological responses to winter stress of an evergreen (Quercus ilex L.) and a semi-deciduous (Cistus albidus L.) Mediterranean woody species. Acta Oecologica, 21(2), 97-107.

9) Oliveira, G., Martins-Loução, M.A., Correia, O. & Catarino, F.M. 1996. Nutrient dynamics in crown tissues of cork-oak (Quercus suber L.). Trees - Structure and Function, 10, 247-254.

10) Oliveira, G., Correia, O., Martins-Loução, M.A. & Catarino, F.M. 1994. Phenological and growth patterns of the Mediterranean oak Quercus suber L. Trees - Structure and Function, 9, 41-46.