Electronic References

1. Prinz, B., et al. “Casting Process for Hypermonotectic Alloys under Terrestrial Conditions.” SpringerLink, Kluwer Academic Publishers, Sept. 1995, doi.org/10.1007/BF01153083.
2. Loper, Carl R. “The Effect of Bismuth in Gray Cast Iron and the Chemistry of Its Neutralization with Rare Earth Metals.” SpringerLink, Springer, Boston, MA, 1 Jan. 1988, link.springer.com/chapter/10.1007/978-1-4613-1013-6_14.
3. Einstein, Andrew J, et al. “Effect of Bismuth Breast Shielding on Radiation Dose and Image Quality in Coronary CT Angiography.” HHS Public Access, 2013
4. McAlister DR. “Gamma Ray Attenuation Properties of Common Shielding Materials. USA: University Lane, 2012.