Foth, Christian; Tischlinger, Helmut; Rauhut, Oliver (2014). «New specimen of Archaeopteryx provides insights into the evolution of pennaceous feathers». Nature. 511 (7507): 79–82. PMID24990749. doi:10.1038/nature13467
Foth, Christian; Tischlinger, Helmut; Rauhut, Oliver (2014). «New specimen of Archaeopteryx provides insights into the evolution of pennaceous feathers». Nature. 511 (7507): 79–82. PMID24990749. doi:10.1038/nature13467