White, R.L. & Bennett, P.M. (2015) Global elevational distribution and extinction risk in birds. PLOS ONE, 10(4), e0121849. journals.plos.org/plosone/article?id=10.1371/journal.pone.0121849
White, R.L. (2013) Global biogeography of traits and extinction risk in birds: an elevational perspective. PhD thesis, University of Kent.
Dr Peter M. Bennett (DICE, University of Kent)