ChemGlobe: Neodymium - Electronic, thermal, and steric data along with an isotope table. - http://partisans.spurious.biz/~pkremer/projects/chemglobe/ptoe/_/60.html
LANL: Neodymium - History, production, properties, and uses. - http://periodic.lanl.gov/elements/60.html
Wikipedia: Neodymium - Properties of the element, including its history, applications, and characteristics. - http://en.wikipedia.org/wiki/Neodymium
Lenntech: Neodymium - Physical data, chemical properties, health and environmental effects. - http://www.lenntech.com/Periodic-chart-elements/Nd-en.htm
EnvironmentalChemistry.com: Neodymium - Atomic structure, chemical and physical properties, and table of nuclides. - http://environmentalchemistry.com/yogi/periodic/Nd.html
Azom.com: Neodymium - History, properties and applications of the element. - http://www.azom.com/details.asp?ArticleID=1595