(en) Akhilesh Ugale, Thejo N. Kalyani et Sanjay J. Dhoble, Lanthanide-Based Multifunctional Materials: From OLEDs to SIMs, Elsevier, , 59–97 p. (ISBN978-0-12-813840-3, DOI10.1016/B978-0-12-813840-3.00002-8), « Chapter 2 - Potential of europium and samarium β-diketonates as red light emitters in organic light-emitting diodes »
(en) Z. K. Heiba, Y. Akin, W. Sigmund et Y. S. Hascicek, « X-ray structure and microstructure determination of the mixed sesquioxides (Eu1−xYbx)2O3 prepared by a sol–gel process », J. Appl. Crystallogr., vol. 36, no 6, , p. 1411–1416 (DOI10.1107/S0021889803019319)
(en) « Europium », sur ScienceDirect, Elsevier (consulté le ) : « "Europium is the most reactive rare-earth element... It swiftly oxidizes in air, ignites in the range of 150–180°C to form Eu3+ oxide (Eu2O3)." »