Úlehla, V. (1947):Napojme prameny, o utrpení našich lesů. Život a práce, Praha.
Uliana, M., Bonato, L., Minelli, A. (2007): The Mecistocephalidae of the Japanese and Taiwanese islands (Chilopoda: Geophilomorpha). Zootaxa, 1396: 1-84.
Uličný, J. (1883): Bericht über bei Brünn gesammelte Myriopoden. Verz. D. naturf. Verein in Brünn, 22: 17-21.
Ulykpan, K. (1988): Composition and distribution of myriapods (Myriapoda) of Mongolia. Scientific files of Mongolian State University, 3(99): 217-223. (in Mongolian)
Ulyshen, M.D., Hanula, J.L. (2009):Litter-dwelling arthropod abundance peaks near coarse woody debris in Loblolly pine forests of the Southeastern United States. Florida Entomologist, 92: 163-164.
Ulyshen, M.D., Hanula, J.L., Horn, S., Kilgo, J.C., Moorman, C.E. (2004): Spatial and temporal patterns of beetles associated with coarse woody debris in managed bottomland hardwood forests. Forest Ecology and Management, 199: 259–272.