Udovic, M., Drobne, D., Lestan, D. (2009): Bioaccumulation in Porcellio scaber (Crustacea, Isopoda) as a measure of the EDTA remediation efficiency of metal-polluted soil. Environmental Pollution, 157: 2822–2829.
Uechtritze, M.F.S. von (1820): Kleine Reisen eines Naturfoches. Breslau, J. F. Körn und Ältern. 354 pp.
Uehara-Prado, M., Fernandes, J.O., Bello, A.M., Machado, G., Santos, A.J., Vaz-de-Melo, F.Z., Freitas, A.V.L. (2009): Selecting terrestrial arthropods as indicators of small-scale disturbance: a first approach in the Brazilian Atlantic forest. Biol. Conserv., 142: 1220-1228.