Christensen, V.L., M.J. Wineland, D.T. Ort, K.M. Mann, and E.R. Neely. 2006. “Eggshell Conductance and Incubator Humidity As Factors in Embryo Survival and Poult Growth”. International Journal of Poultry Science 5 (9): 830–837. https://doi.org/10.3923/ijps.2006.830.837.