References

Bentor, Yinon. Chemical Element.com - Iridium. Apr. 17, 2007 <http://www.chemicalelements.com/elements/ir.html>.

"Iridium” 2007. April 2007. < http://nautilus.fis.uc.pt/st2.5/scenes-e/elem/e07700.html>.

Iridium. 2007. April 2007. < http://theodoregray.com/PeriodicTable/Elements/077/index.s8.html>.

“Iridium”. 2007. Book Rag. April 2007. < http://www.bookrags.com/Iridium>.

Kenneth Barbalace. Periodic Table of Elements - Iridium – Ir. EnvironmentalChemistry.com. 1995 - 2007. Accessed on-line: 4/18/2007
       < http://EnvironmentalChemistry.com/yogi/periodic/Ir.html>.

Periodic Table of Elements. “Iridium”. 2003. Radiochemistry. April 2007. < http://www.radiochemistry.org/periodictable/elements/77.html>.

Winter, Mark. Iridium. 18th April, 2007. The University of Sheffeild. April 2007. < http://www.webelements.com/webelements/elements/text/Ir/key.html>.