Every reference with a DOI in the deposited reference list resolved to a known
work in Crossref or DataCite at the dated check, and none carried a publisher retraction,
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The 9 references without a DOI — listed, not checked
no DOI — not checkedBarsbold R (1986) Raubdinosaurier Oviraptoren. In: Vorobeva EI (ed) Gerpetologicheskie issledovaniya v mongolskoi narodnoi respublike. Acad Sci USSR, Moscow, pp 210–223
no DOI — not checkedBarsbold R, Osmólska H, Watabe M, Currie PJ, Tsogtbaatar K (2000) New oviraptorosaur (Dinosauria, Theropoda) from Mongolia: the first dinosaur with a pygostyle. Acta Palaeontol Pol 45:97–106
no DOI — not checkedBreazile JE, Hartwig H-G (1989) Central nervous system. In: King AS, McLelland J (eds) Form and function in birds. Academic, London, pp 485–566
no DOI — not checkedCampbell KE, Marcus L (1992) The relationship of hindlimb bone dimensions to body weight in birds. Nat. Hist Mus Los Angeles Co Sci Ser 36:395–412
no DOI — not checkedElzanowski A (1999) A comparison of the jaw skeleton in theropods and birds, with a description of the palate in Oviraptoridae. Smithson Contrib Paleobiol 89:311–323
no DOI — not checkedJerison HJ (1973) Evolution of the brain and intelligence. Academic, New York
no DOI — not checkedMaryańska T, Osmólska H, Wolsan M (2002) Avialan status for Oviraptorosauria. Acta Palaeontol Pol 47:97–116
no DOI — not checkedOsmólska H (2004) Evidence on relation of brain to endocranial cavity in oviraptorid dinosaurs. Acta Palaeontol Pol 49:321–324
no DOI — not checkedSchommer M (1999) “Rhea americana” (On-line), Animal Diversity Web. Accessed December 18, 2006 at http://animaldiversity.ummz.umich.edu/site/accounts/information/Rhea_americana.html
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