Chalcogen, Lanthanoid, Transitional, Er-La

• Er-La-O
• Er-La-S
• Ca-Er-La-Mn-O
• Er-La-Se
• Er-La-Mo-O
• thermal and thermodynamic properties
• structural properties
• electronic and electrical properties
• phase transitions
• thermoelectric power
• transitional
• rare earth
• chalcogen
• lanthanoid
• cubic
• tetragonal
• orthorhombic
• monoclinic
• trigonal