ChemicalElements.com: Cesium - Basic information, atomic structure, and isotopes table. It's Elemental: Cesium - Basic physical and historical information. USGS Minerals Information: Cesium - Statistics and information on the worldwide supply, demand, and flow of the element (PDF format). EnvironmentalChemistry.com: Cesium - Atomic structure, chemical and physical properties, and table of nuclides. Wikipedia: Caesium - Properties of the element, including its history, applications, and characteristics. Radiochemistry of Cesium - Full text of the monograph by M. T. Kinsley (Brookhaven National Laboratory, Upton, New York). WebElements: Caesium - Extensive information on history, uses, occurrence, compounds, and properties.