Main mortality factors for the Eastern Imperial Eagle (Aquila heliaca Savigny, 1809) in Bulgaria
Lazarova, Ivanka, Dobrev, Dobromir, Gradev, Gradimir, Petrov, Rusko, Stoychev, Stoycho, Klisurov, Ivaylo, Demerdzhiev, Dimitar
Long-term lead intoxication of Griffon Vulture (Gyps fulvus Hablizl, 1783) supposedly the result of illegal shooting
Stamenov, Anton, Lazarova, Ivanka, Arkumarev, Volen, Dimitrova, Stefka, Terziev, Nikolay, Delchev, Atanas, Dobrev, Dobromir