• High temperature defect equilibrium in ZnS:Cu single crystalsLott, Kalju; Šinkarenko, Svetlana; Türn, Leo; Nirk, Tiit; Öpik, Andres; Kallavus, Urve; Gorokhova, Elena; Grebennik, A.; Vishnjakov, A.Physica status solidi (b)2010 / 7, p. 1662-1665