1971, Chalcogen

• O-V
• O-Ti
• Fe-O
• Fe-S
• Cu-Te
• structural properties
• phase transitions
• phase diagram
• electronic and electrical properties
• chalcogen
• transitional
• non-disordered
• ternary
• disordered
• cubic
• orthorhombic
• monoclinic
• tetragonal
• trigonal