[Birukoj VP & Ivanovskij VV 2005: Lesa-balotny komplex "Čyrvony Bor". Forest-bog complex "Čyrvony Bor", 136-141. In: Kozulin AV, Vergeichik LA & Zuenok SV (eds): Skarby prirody Belarusii. Treasures of Belarusian Nature. Vydavectvo Belarus, Minsk, 216.]Search in Google Scholar
[Danko Š, Karaska D & Krištín A 2002: Sova dlhochvostá (Strix uralensis) [Ural owl (Strix uralensis)], 371-373. In: Danko Š, Darolová A & Krištín A (eds): Rozšírenie vtákov na Slovensku. Birds distribution in Slovakia. Veda, Bratislava, 688. [In Slovak with English summary]]Search in Google Scholar
[Hadarics T & Zalai T 2008: Magyarország madarainak névjegyzéke [An annotated list of the birds of Hungary]. MME, Budapest, 278. [In Hungarian with English summary]]Search in Google Scholar
[Haraszthy L 1998: Magyarország madarai [Birds of Hungary]. Mezőgazda Kiadó, Budapest, 441. [In Hungarian]]Search in Google Scholar
[Ivanovskij VV 2004: Dlinnochvostaja nejasyť Strix uralensis Pallas, 1771. Dajgachvostaja kugakajka, dajgachvostaja njajasyc [Ural owl Strix uralensis Pallas, 1771], 143-144. In: Dubovik AA et al. (eds): Krasnaja kniga Respubliky Belarus - životnye, Redkie i nachodjaščiesja pod ugrozoj isčeznovenija vidy dikich životnych [Red Book of Belarus Republic - animals, Rare and threatened wildlife species]. Izdateľstvo Belaruskaja Encyklapedyja imeni Petrucja Brovki, Minsk, 320. [In Russian]]Search in Google Scholar
[Matoušek B, Rác P & Stollmann A 2002: Ornitologické poznámky z pozostalosti RNDr. Zoltána Molnára [Ornithological notes from the inheritance of RNDr. Zoltán Molnár]. Tichodroma 15: 102-126. [In Slovak with English summary]]Search in Google Scholar
[Potish L 2009: Ptachi Zakarpatskoj oblasti [Birds of the Transcarpathian Region of Ukraine]. Lviv, 123. [In Ukrainian with English summary]]Search in Google Scholar
[Sládek J 1997: Doplnky k histórii ochrany sov na Slovensku [Ergänzungen zur Gesichichte des Eulenschutzes in der Slowakei]. Tichodroma 10: 144-154. [In Slovak with German summary]]Search in Google Scholar
