Distribution, abundance, breeding parameters, threats and prey preferences of the eastern imperial eagle (Aquila heliaca) in European Turkey
Demerdzhiev, Dimitar, Dobrev, Dobromir, Stoychev, Stoycho, Terziev, Nikolay, Spasov, Svetoslav, Boev, Zlatozar, Stoychev, Stoycho
Conservation measures undertaken to improve the population status of eastern imperial eagle (Aquila heliaca) in Bulgaria
Demerdzhiev, Dimitar, Stoychev, Stoycho, Dobrev, Dobromir, Spasov, Svetoslav, Terziev, Nikolay
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