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Pereira, Joana, Warren E. Johnson, Stephen J. O’Brien, Erich D. Jarvis, Guojie Zhang, M. Thomas P. Gilbert, Vitor Vasconcelos, و Agostinho Antunes. "Evolutionary Genomics and Adaptive Evolution of the Hedgehog Gene Family (Shh, Ihh and Dhh) in Vertebrates." PLoS One 2014.

Pereira, Joana, et al. "Evolutionary Genomics and Adaptive Evolution of the Hedgehog Gene Family (Shh, Ihh and Dhh) in Vertebrates." PLoS One 2014.