Voigt, C. C.; Winter, Y. (1 February 1999). "Energetic cost of hovering flight in nectar-feeding bats (Phyllostomidae: Glossophaginae) and its scaling in moths, birds and bats". Journal of Comparative Physiology B. 169 (1): 38–48. doi:10.1007/s003600050191. PMID10093905. S2CID29647236.
Voigt, C. C.; Winter, Y. (1 February 1999). "Energetic cost of hovering flight in nectar-feeding bats (Phyllostomidae: Glossophaginae) and its scaling in moths, birds and bats". Journal of Comparative Physiology B. 169 (1): 38–48. doi:10.1007/s003600050191. PMID10093905. S2CID29647236.
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Voigt, C. C.; Winter, Y. (1 February 1999). "Energetic cost of hovering flight in nectar-feeding bats (Phyllostomidae: Glossophaginae) and its scaling in moths, birds and bats". Journal of Comparative Physiology B. 169 (1): 38–48. doi:10.1007/s003600050191. PMID10093905. S2CID29647236.