KORŇAN, Martin - HOLMES, Richard T. Search for convergence patterns in foraging guild structure of bird assemblages between forests in three zoogeographic regions. In 8th Conference of the European Ornithologists´ Union : 27-30 August 2011, Riga. - Riga : Latvian Ornithological Society, 2011. ISBN 978-9984-9747-2-9, p. 203.