Alula (English Wikipedia)

Analysis of information sources in references of the Wikipedia article "Alula" in English language version.

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archive.org

Ehrlich et al. 1994, p. 219 Ehrlich, Paul R.; Dobkin, David S.; Wheye, Darryl; Pimms, Stuart L. (1994), The Birdwatcher's Handbook, Oxford University Press, ISBN 0-19-858407-5

doi.org

Sanz et al. 1996 Sanz, J. L.; Chiappe, L. M.; Pérez-Moreno, B. P.; Buscalioni, A. D.; Moratalla, J. J.; Ortega, F.; Poyato-Ariza, F. J. (1996-08-01), "An Early Cretaceous bird from Spain and its implications for the evolution of avian flight", Nature, 382 (6590): 442–445, Bibcode:1996Natur.382..442S, doi:10.1038/382442a0, S2CID 4284528
Zhang & Zhou 2000 Zhang, Fucheng; Zhou, Zhonghe (8 December 2000), "A Primitive Enantiornithine Bird and the Origin of Feathers", Science, 290 (5498): 1955–1959, Bibcode:2000Sci...290.1955Z, doi:10.1126/science.290.5498.1955, PMID 11110660

harvard.edu

ui.adsabs.harvard.edu

Sanz et al. 1996 Sanz, J. L.; Chiappe, L. M.; Pérez-Moreno, B. P.; Buscalioni, A. D.; Moratalla, J. J.; Ortega, F.; Poyato-Ariza, F. J. (1996-08-01), "An Early Cretaceous bird from Spain and its implications for the evolution of avian flight", Nature, 382 (6590): 442–445, Bibcode:1996Natur.382..442S, doi:10.1038/382442a0, S2CID 4284528
Zhang & Zhou 2000 Zhang, Fucheng; Zhou, Zhonghe (8 December 2000), "A Primitive Enantiornithine Bird and the Origin of Feathers", Science, 290 (5498): 1955–1959, Bibcode:2000Sci...290.1955Z, doi:10.1126/science.290.5498.1955, PMID 11110660

nih.gov

pubmed.ncbi.nlm.nih.gov

Zhang & Zhou 2000 Zhang, Fucheng; Zhou, Zhonghe (8 December 2000), "A Primitive Enantiornithine Bird and the Origin of Feathers", Science, 290 (5498): 1955–1959, Bibcode:2000Sci...290.1955Z, doi:10.1126/science.290.5498.1955, PMID 11110660

sciencedaily.com

Laboratory of Behavioral Ecology and Evolution at Seoul National University (5 June 2015). "Small vortex on the wing makes the elegance of birds' flight". Retrieved 5 June 2015.

semanticscholar.org

api.semanticscholar.org

Sanz et al. 1996 Sanz, J. L.; Chiappe, L. M.; Pérez-Moreno, B. P.; Buscalioni, A. D.; Moratalla, J. J.; Ortega, F.; Poyato-Ariza, F. J. (1996-08-01), "An Early Cretaceous bird from Spain and its implications for the evolution of avian flight", Nature, 382 (6590): 442–445, Bibcode:1996Natur.382..442S, doi:10.1038/382442a0, S2CID 4284528