Louchart, Antoine; Mourer-Chauviré, Cécile; Guleç, Erksin; Howell, Francis Clark; White, Tim D. (1998). "L'Avifaune de Dursunlu, Turquie, Pléistocène inférieur: Climat, environnement et biogéographie" [The avifauna of Dursunlu, Turkey, Lower Pleistocene: climate, environment and biogeography]. Comptes Rendus de l'Académie des Sciences - Series IIA - Earth and Planetary Science. 327 (5): 341–346. Bibcode:1998CRASE.327..341L. doi:10.1016/S1251-8050(98)80053-0.
Louchart, Antoine; Vignaud, Patrick; Likius, Andossa; Mackaye, Hassane T.; Brunet, Michel (27 June 2005). "A New Swan (Aves: Anatidae) in Africa, from the Latest Miocene of Chad and Libya". Journal of Vertebrate Paleontology. 25 (2): 384–392. doi:10.1671/0272-4634(2005)025[0384:ANSAAI]2.0.CO;2. JSTOR4524452. S2CID85860957.
Louchart, Antoine; Mourer-Chauviré, Cécile; Guleç, Erksin; Howell, Francis Clark; White, Tim D. (1998). "L'Avifaune de Dursunlu, Turquie, Pléistocène inférieur: Climat, environnement et biogéographie" [The avifauna of Dursunlu, Turkey, Lower Pleistocene: climate, environment and biogeography]. Comptes Rendus de l'Académie des Sciences - Series IIA - Earth and Planetary Science. 327 (5): 341–346. Bibcode:1998CRASE.327..341L. doi:10.1016/S1251-8050(98)80053-0.
Schlatter, Roberto; Navarro, Rene A.; Corti, Paulo (2002). "Effects of El Nino Southern Oscillation on Numbers of Black-Necked Swans at Rio Cruces Sanctuary, Chile". Waterbirds. 25 (Special Publication 1): 114–122. JSTOR1522341.
Louchart, Antoine; Vignaud, Patrick; Likius, Andossa; Mackaye, Hassane T.; Brunet, Michel (27 June 2005). "A New Swan (Aves: Anatidae) in Africa, from the Latest Miocene of Chad and Libya". Journal of Vertebrate Paleontology. 25 (2): 384–392. doi:10.1671/0272-4634(2005)025[0384:ANSAAI]2.0.CO;2. JSTOR4524452. S2CID85860957.
mindat.org
"Mindat.org". www.mindat.org. Archived from the original on 2021-11-27. Retrieved 2021-11-27.
Louchart, Antoine; Vignaud, Patrick; Likius, Andossa; Mackaye, Hassane T.; Brunet, Michel (27 June 2005). "A New Swan (Aves: Anatidae) in Africa, from the Latest Miocene of Chad and Libya". Journal of Vertebrate Paleontology. 25 (2): 384–392. doi:10.1671/0272-4634(2005)025[0384:ANSAAI]2.0.CO;2. JSTOR4524452. S2CID85860957.