Nalazi i promatranja prstenovanih i krilnim markicama obeleženih orlova štekavaca, Haliaeetus albicilla, u Jugoslaviji u godinama 1985-1988. : I. izvještaj = Recoveries and sightings of banded and wing-tagged white-tailed eagles in Yugoslavia during 1985-1988. : 1st report - Ham, Ištvan (Array, 1990)