1. Leaf elemental composition of Quercus ilex L. in the urban area of Naples. I. Trace elements;Alfani,1989
2. L'azoto nelle fog-lie delle piante in ambiente urbano;Alfani,1994
3. Amount and elemental composition of dry deposition to leaf surfiace of Quercus ilex in the urban area of Naples;Alfani;Agr. Med. Special Volume,1995
4. Trace metals in the soil and the leaves of Quercus ilex in the urban area of Naples;Alfani;Biological Trace Metals Research,1996
5. Chemical analysis of ecological materials;Allen,1989