Marco, A. S. (2007). New occurrences of the extinct vulture Gyps melitensis (Falconiformes, Aves) and a reappraisal of the paleospecies. Journal of Vertebrate Paleontology. 27 (4): 1057—1061. doi:10.1671/0272-4634(2007)27[1057:NOOTEV]2.0.CO;2. S2CID198131101.
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Marco, A. S. (2007). New occurrences of the extinct vulture Gyps melitensis (Falconiformes, Aves) and a reappraisal of the paleospecies. Journal of Vertebrate Paleontology. 27 (4): 1057—1061. doi:10.1671/0272-4634(2007)27[1057:NOOTEV]2.0.CO;2. S2CID198131101.