^ 1.01.1Jens-Christoph Rybak, et al. Metal–Organic Framework Luminescence in the Yellow Gap by Codoping of the Homoleptic Imidazolate ∞3[Ba(Im)2] with Divalent Europium. J. Am. Chem. Soc., 2013, 135 (18), pp 6896–6902 DOI: 10.1021/ja3121718
^Bischof, R.; Kaldis, E.; Wachter, P. Europium hydride (EuH2): a new ferromagnetic semiconductor. Journal of Magnetism and Magnetic Materials, 1983. Vol. 31-34. Issue 1. pp 255-6. DOI: 10.1016/0304-8853(83)90239-1