Angst D.; Lécuyer C.; Amiot R.; Buffetaut E.; Fourel F.; Martineau F.; Legendre S.; Abourachid A.; Herrel A. Isotopic and anatomical evidence of an herbivorous diet in the Early Tertiary giant bird Gastornis. Implications for the structure of Paleocene terrestrial ecosystems. Naturwissenschaften. 2014, 101: 313–322. PMID 24563098. doi:10.1007/s00114-014-1158-2.
Angst D.; Lécuyer C.; Amiot R.; Buffetaut E.; Fourel F.; Martineau F.; Legendre S.; Abourachid A.; Herrel A. Isotopic and anatomical evidence of an herbivorous diet in the Early Tertiary giant bird Gastornis. Implications for the structure of Paleocene terrestrial ecosystems. Naturwissenschaften. 2014, 101: 313–322. PMID 24563098. doi:10.1007/s00114-014-1158-2.