FERRETTI, M. Crown transparency of beech (Fagus sylvatica, L.) in the northern Apennines (Italy) - status, changes and relationships with site characteristics and other indices of tree condition. In Chemosphere, 1998, roč. 36, č. 4-5, s. 1037-1042Error: read handle in (rep.epca.fmtISO690).fmtXDatabaze. Dostupné na internete: <https://www.sciencedirect.com/science/article/abs/pii/S0045653597101680>