Template:Sanz et al., 1996
- Sanz, J.L., Chiappe, L.M., Pérez-Moreno, B.P., Buscalioni, A.D., Moratalla, J.J., Ortega, F. & Poyato-Ariza, F.J. 1996. An Early Cretaceous bird from Spain and its implications for the evolution of avian flight. Nature 382(6590): 442–445. DOI: 10.1038/382442a0