Sumpfohreule (German Wikipedia)

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

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birdlife.org

Lutz D. Schmadel: Dictionary of Minor Planet Names. Springer, Heidelberg 2003, 5. Auflage, Seite 664 (englisch)

Wilson Bull., 105(3), 1993, S. 497–503 (PDF; engl.; 323 kB)
Wilson Bull., 105(3), 1993, S 490-496. pdf, engl
Raptor Research 32(2):111-115 (1998) (PDF; engl.; 611 kB)
Raptor Research 35(1):68-69 (2001) (PDF; engl.; 207 kB)
Condor 62:6 (1960) S. 486. (PDF; engl.; 149 kB)
The Auk 79 (1959) S. 222 f. (PDF; engl.; 575 kB)

M. L. Oparin: Recent Fauna of Ground-Nesting Birds in Transvolga Steppes and its Dynamics in the 20th Century. In: Biology Bulletin, 2008, Vol. 35, No. 4, S. 422–427. © Pleiades Publishing, Inc., 2008. ISSN 1062-3590