Citation: Tobash, Paul H.; Lins, Daniel; Bobev, Svilen; Hur, Namjung; Thompson, Joe D.; Sarrao, John L. (2006). Vacancy Ordering in SmGe2-xand GdGe2-x(x= 0.33): Structure and Properties of Two Sm3Ge5Polymorphs and of Gd3Ge5. Inorganic Chemistry, 45, pp. 7286-7294.