P. F. Dias and Y. M. R. Müller, “Features of the embryonic development of Gallus gallus domesticus in different temperatures and times of incubation”, Braz. J. Vet. Res. Anim. Sci., vol. 35, no. 5, pp. 233–235, Jan. 1998, doi: 10.1590/S1413-95961998000500010.