Lihat Juga

• Figure 2 from: Lazarova I, Petrov R, Andonova Y, Klisurov I, Dixon A (2021) Re-introduction of the Saker Falcon (Falco cherrug) in Bulgaria - preliminary results from the ongoing establishment phase by 2020. Biodiversity Data Journal 9: e63729. https://doi.org/10.3897/BDJ.9.e63729
  oleh: Lazarova, Ivanka, et al.
  Terbitan: (2021)
• Re-introduction of the Saker Falcon (Falco cherrug) in Bulgaria - preliminary results from the ongoing establishment phase by 2020
  oleh: Lazarova, Ivanka, et al.
  Terbitan: (2021)
• First record of the northern bald ibis Geronticus eremita (Linnaeus, 1758) in Bulgaria
  oleh: Boev, Zlatozar, et al.
  Terbitan: (2020)
• Figure 2 from: Kmetova–Biro E, Stoynov E, Ivanov I, Peshev H, Marin S, Bonchev L, Stoev IP, Stoyanov G, Nikolova Z, Vangelova N, Parvanov D, Grozdanov A (2021) Re-introduction of Griffon Vulture (Gyps fulvus) in the Eastern Balkan Mountains, Bulgaria – completion of the establishment phase 2010-2020. Biodiversity Data Journal 9: e66363. https://doi.org/10.3897/BDJ.9.e66363
  oleh: Kmetova–Biro, Elena, et al.
  Terbitan: (2021)
• Phase II screening Taluk Kuantan WPP XI a. SKP E : final report : screening (phase II) & detailed survey & preliminary (Phase III A) for transmigrations settlement developement in Aceh, Riau & Jambi, Sumatra
  Terbitan: (1992)