Abdel-Salam, Z. et al. 2005. Elemental and Ultrastructural Analysis of the Eggshell: Ca, Mg and Na Distribution During Embryonic Development via LIBS and SEM Techniques. International Journal of Poultry Science. 5, 1 (Dec. 2005), 35–42. DOI:https://doi.org/10.3923/ijps.2006.35.42.