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  1. By: Lapeva-Gjonova, Albena - Pramatarova, Monika - Borowiec, Lech - Gjonov, Ilia - Kostova, Rumyana - Bekchiev, Rostislav - Borissov, Simeon
    Type: Article
    In: Biodiversity data journal
    Volume: 13
    Date: 2025-11-4
    Page Range: 1--16
    Publication Info: Sofia Pensoft Publishers [2013]-
  2. By: Kostova, Rumyana - Bekchiev, Rostislav - Popgeorgiev, Georgi - Kornilev, Yurii
    Type: Article
    In: Nature conservation
    Volume: 53
    Date: 2023
    Page Range: 39--59
    Publication Info: Sofia, Bulgaria Pensoft Publishers 2012-
  3. By: Kostova, Rumyana
    Type: Article
    In: Biodiversity journal
    Volume: 6
    Issue: 1
    Date: 2015
    Page Range: 341--352
    Publication Info: Palermo, Italy Edizioni Danaus 2010-
  4. By: Kostova, Rumyana - Georgiev, Borislav,
    Type: Article
    In: Biodiversity data journal
    Volume: 4
    Date: 2016-4-1
    Page Range: 1--132
    Publication Info: Sofia Pensoft Publishers [2013]-
  5. By: Sabella, Giorgio - Bekchiev, Rostislav - Kostova, Rumyana
    Type: Article
    In: Biodiversity journal
    Volume: 8
    Issue: 1
    Date: 2017
    Page Range: 185--192
    Publication Info: Palermo, Italy Edizioni Danaus 2010-
  6. By: Lapeva-Gjonova, Albena - Gjonov, Ilia - Kostova, Rumyana - Mifsud, David
    Type: Article
    In: Journal of Hymenoptera research
    Volume: 98
    Date: 2025-11-17
    Page Range: 1087--1106
    Publication Info: Washington, D.C International Society of Hymenopterists