[Ballmann, P. 1966. Die Vögel aus der altburdigalen Spaltenfüllung von Wintershof (West) bei Eichstätt [The birds of the altburdigalen fissure filling of Wintershof (West) in Eichstaett]. – Inaugural Dissertation zur erlangung der Doktorwürde der nHohe Naturwissenschaftlichen Fakultät der Ludwig Maximiliane, Universität zu München, München, pp. 115 (in German)]Search in Google Scholar
[Baumel, J. J., King, A. S., Lucas, A. M., Breazile, J. E. & Evans, H. E. 1979. Nomina anatomica avium. An annotated anatomical dictionary of birds. – Academical Press, London, pp. 637]Search in Google Scholar
[Cheneval, J. 1983. Révision de l’avifaune du gisement aquitanien de Saint-Gérand-le-Puy (Allier, France) (Gaviiformes à Anseriformes) [Review of the avifauna of aquitanien deposit of Saint-Gérand-le-Puy (Allier, France) (Gaviiformes to Anseriformes)]. – Unpublished Thesis (Nr. 1380) Université Claude-Bernard, Lyon, pp. 220 (in French)]Search in Google Scholar
[Cramp, S. (ed.) 1998. The Complete Birds of the Western Palearctic on CD rom. – Oxford University Press, UK]Search in Google Scholar
[Cuisin, J. 1989. L’identification des crânes de passereaux (Passeriformes: Aves) [The identification of skulls passerines (Passeriformes, Aves)]. – Doct. Dissertation, Universite de Bourgogne, pp. 340 (in French)]Search in Google Scholar
[Driesch, A. von den 1976. A guide to the measurements of animal bones from archaeological sites. – Peabody Museum Bulletin 1., pp. 148]Search in Google Scholar
[Fürbringer, M. 1888. Untersuchungen zur Morphologie und Systematik der Vögel, zugleich ein Beitrag zur Anatomie der Stutz- und Bewegungeorgane [Studies on the morphology and systematics of birds, also contribute to the anatomy of the mounting socket and locomotor organe]. – Amsterdam, Jena, pp. 421 (in German)10.5962/bhl.title.51998]Search in Google Scholar
[Gál, E. 2002. Avifauna pleistocena a Romaniei [Pleistocene bird faunas of Romania]. – Unpublied C.Sc Dissertation, Universitatea din Bucureşti, Facultatea de Geologie București, pp. 263 (in Romanian)]Search in Google Scholar
[Gilbert, B. M., Martin, L. D. & Savage, H. G. 1981. Avian Osteology. – Library of Congress, Wyoming, pp. 252]Search in Google Scholar
[Jánossy, D. 1983. Humeri of central European smaller Passeriformes. – Fragmenta Mineralogica et Pale-ontologica 11: 85–112.]Search in Google Scholar
[Kessler, E. 2013a A Kárpát-medence madárvilágának őslénytani kézikönyve [Paleontological handbook of birdlife in the Carpathian Basin]. – Könyvműhely, Miskolc, pp. 508 (in Hungarian)]Search in Google Scholar
[Kessler, E. 2013b Neogene songbirds (Aves, Passeriformes) faunae from Hungary. – Hantkeniana 2013: 37–149.]Search in Google Scholar
[Kessler, E. & Moldvai, M. 1993. Studii biometrice şi morfologice asupra scheletului membrelor la Corvidae (Aves) (Partea I.) [Biometrical and morphological studies of limbs scheleton to Corvidae (Aves) (Part I.)]. – Studia Universitatis Babes-Bolyai, Series Biologia 38: 69–80 (in Romanian with English Summary)]Search in Google Scholar
[Lambrecht, K. 1933. Handbuch der Palaeornithologie [Handbook of Palaeornithology]. – Gebrüder Borntraeger Berlin, pp. 1024 (in German)]Search in Google Scholar
[Milne-Edwards, A. 1867–1868. Recherches anatomiques et paléontologiques pour servir à l’histoire des oiseaux fossiles de la France [Anatomical and paleontological research to serve a history the fossil birds of France]. Vol. 1. – Victor Masson et Fils, Paris, pp. 472+ pls 96 (in French)10.5962/bhl.title.70900]Search in Google Scholar
[Moreno, E. 1985. Clave osteologica para la identification de los Passeriformes Ibericos, I. [Osteological identification key for the Iberian Passerines I.]. – Ardeola 32(2): 295–377. (in Spanish)]Search in Google Scholar
[Moreno, E. 1986. Clave osteologica para la identification de los Passeriformes Ibericos, II. [Osteological identification key for the Iberian Passerines II.]. – Ardeola 33(1–2): 69–129. (in Spanish)]Search in Google Scholar
[Moreno, E. 1987. Clave osteologica para la identification de los Passeriformes Ibericos, III. [Osteological identification key for the Iberian Passerines III.]. – Ardeola 34(2): 243–273. (in Spanish)]Search in Google Scholar
[Mourer-Chauviré, C. 1975. Faunes d’oiseaux du Pléistocène de France: systématique, évolution et adaptation, interprétation paléoclimatique [Bird Fauna of the Pleistocene of France: systematics, evolution and adaptation, paleoclimatic interpretation]. – Géobios 8: 333–352. (in French with English Summary)10.1016/S0016-6995(75)80048-9]Search in Google Scholar
[Solti, B. 1996. The comparative osteomorphological study of the European small-statured Falcons (Aves: Falconidae). – Folia Historico Naturalia Musei Matraensis 21: 5–282.]Search in Google Scholar
[Tomek, T. & Bochenṡki, Z. M. 2000. The comparative osteology of European corvids (Aves: Corvidae), with a key to the identification of their skeletal elements. – Publications of the Institute of Systematics and Evolution of Animals, Kraków, pp. 102]Search in Google Scholar
[Ujhelyi, P. 1992. Identification of European finch species (Fringillidae) based on skull morphology keys. – Aquila 99: 99–110.]Search in Google Scholar