(1)
Salamon , A.; Kent, J. P. Changes During Incubation Within Double-Yolked Duck (Anas Platyrhynchos Domesticus) Eggs: Yolk Position, Mortality, Hatchability and the Importance of an Optimal Egg Size. Int. J. Poult. Sci. 2014, 13 (12), 695–702. https://doi.org/10.3923/ijps.2014.695.702.