HS. Helmisaari. Nutrient retranslocation within the foliage of Pinus sylvestris.. „Tree Physiol”. 10 (1), s. 45-58, Jan 1992. PMID: 14969874.
DN. Fife, EK. Nambiar, E. Saur. Retranslocation of foliar nutrients in evergreen tree species planted in a Mediterranean environment.. „Tree Physiol”. 28 (2), s. 187-96, Feb 2008. PMID: 18055429.
EK. Sadanandan Nambiar, DN. Fife. Nutrient retranslocation in temperate conifers.. „Tree Physiol”. 9 (1_2), s. 185-207, 1991. PMID: 14972864.