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Sahlén, Göran; Ekestubbe, Katarina (16. 5. 2000). „Identification of dragonflies (Odonata) as indicators of general species richness in boreal forest lakes”. Biodiversity and Conservation. 10 (5): 673—690. S2CID40735036. doi:10.1023/A:1016681524097.
„Odonata”. БиоРас. Архивирано из оригинала 07. 08. 2020. г. Приступљено 25. 08. 2019.
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Norberg, R. Åke (1972). „The pterostigma of insect wings an inertial regulator of wing pitch”. Journal of Comparative Physiology A. 81 (1): 9—22. S2CID198144535. doi:10.1007/BF00693547.
Sahlén, Göran; Ekestubbe, Katarina (16. 5. 2000). „Identification of dragonflies (Odonata) as indicators of general species richness in boreal forest lakes”. Biodiversity and Conservation. 10 (5): 673—690. S2CID40735036. doi:10.1023/A:1016681524097.