Colour ringing programme of the lesser spotted eagle (Aquila pomarina) population in Slovakia and its new results in the period 2009–2012
Dravecký, Miroslav, Danko, Štefan, Hrtan, Ervín, Kicko, Ján, Maderič, Boris, Mihók, Jozef, Balla, Miloš, Belka, Tomáš, Karaska, Dušan
Ural owl (Strix uralensis) nesting in floodplain forest in the Východoslovenská rovina Plain
Balla, Miloš
Lesser Spotted Eagle (Aquila pomarina) colour ringing programme and its first results in the period 2000-2008 in Slovakia
Dravecký, Miroslav, Maderič, Boris, Šotnár, Karol, Danko, Štefan, Harvančík, Stanislav, Kicko, Ján, Karaska, Dušan, Vrlík, Peter, Vrána, Josef, Balla, Miloš, Boucný, Dušan, Kišac, Pavol
Unusual cases of nesting by the Imperial Eagle (Aquila heliaca) in Eastern Slovakia
Danko, Štefan, Balla, Miloš