ChemicalElements.com: Rutherfordium
Basic information, atomic structure, and isotopes.
EnvironmentalChemistry.com: Rutherfordium
Atomic structure and table of nuclides.
It's Elemental: Rutherfordium
Basic physical and historical information.
LANL: Rutherfordium
Basic information, history, and isotopes.
Lenntech: Rutherfordium
Physical data and chemical properties.
Visual Elements: Rutherfordium
Physical information, key isotopes, and ionisation energies.
WebElements: Rutherfordium
Information on history and properties.