Christensen, V., Bagley, L., Olson, T., Grimes, J., Rowland, R., & Ort, D. (2006). Shell Thickness of Turkey Eggs Affects Cardiac Physiology and Embryo Survival. International Journal of Poultry Science, 5(8), 796–803. https://doi.org/10.3923/ijps.2006.796.803