PÜTTSEPP, Ülle - LÖHMUS, Krista - KOPPEL, Andres. Decomposition of fine roots and alpha-cellulose in a short rotation willow (salix spp.) plantation on abandoned agricultural land. In Silva fennica : quarterly journal of forest science. - Helsinki : Finnish Society of Forest Science, 2007. ISSN 0037-5330, 2007, vol. 41, no. 2, s. 247-258.