Citation: Sheng-qing Xia; Svilen Bobev (2007). Interplay between Size and Electronic Effects in Determining the Homogeneity Range of the A9Zn4+xPn9 and A9Cd4+xPn9 Phases (0 <=x<= 0.5), A = Ca, Sr, Yb, Eu; Pn = Sb, Bi. Journal of the American Chemical Society, 129, pp. 10011-10018.