ChemicalElements.com: Rhenium - Basic information, atomic structure, and isotopes. USGS Minerals Information: Rhenium - Statistics and information on the worldwide supply, demand, and flow of the element (PDF format). It's Elemental: Rhenium - Basic physical and historical information. EnvironmentalChemistry.com: Rhenium - Atomic structure, chemical and physical properties, and table of nuclides. Lenntech: Rhenium - Physical data, chemical properties, and health effects. Wikipedia: Rhenium - Properties of the element, including its history, applications, and characteristics. Radiochemistry of Rhenium - Full text of the monograph by G. W. Leddicotte (Oak Ridge National Laboratory, Oak Ridge, Tennessee). WebElements: Rhenium - Extensive information on history, uses, occurrence, compounds, and properties.