Leoni, S., Carrillo-Cabrera, W., & Grin, Y. (2003). Modelling of the α (clathrate VIII) ↔ β (clathrate I) phase transition in Eu8Ga16Ge30. Journal of Alloys and Compounds, 350(1-2), 113-122. doi:10.1016/S0925-8388(02)00932-5.