^A. W. Sleight and D. P. Kelly, Rare-earth sesquisulfides, Ln2S3, Inorganic Syntheses. McGraw-Hill Book Company, Inc., 14: pp. 152–155 (德文)
^J.B. Goodenough, A. Hamnett, G. Huber, F. Hullinger, M. Leiß, S.K. Ramasesha, H. Werheit, [《硫化镨》在Google Books的內容。 Physics of Non-Tetrahedrally Bonded Binary Compounds III / Physik Der Nicht ...], Springer. 1984: pp. 332,