^Guittard, Micheline; Benacerraf, A.; Flahaut, J. Selenides L2Se3 and L2Se4 of rare earth elements. Ann. Chim. (Paris), 1964. 9 (1-2): 25-34. CAN61: 38017.
^Sadygov, F. M.; Dzhafarova, E. K.; Einullaev, A. V. Phase equilibria of the Sb2Se3-Tm2Se3 system. Zhurnal Neorganicheskoi Khimii, 2002. 47 (12): 2052-2054. ISSN0044-457X.