Dunkellaubsänger (German Wikipedia)

Analysis of information sources in references of the Wikipedia article "Dunkellaubsänger" in German language version.

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doi.org

Robert Pfeifer, Jutta Stadler, Roland Brandl: Birds from the Far East in Central Europe: a test of the reverse migration hypothesis. Journal of Ornithology Band 148 (Heft 3), 2007, S. 379–385, doi:10.1007/s10336-007-0140-6