1. G. Wiesenger, G. Hilscher, Magnetism of hydrides, in Handbook of Magnetic Materials, vol. 17, ed. by K.H.J. Buschow (2008), pp. 293–456
2. I.S. Tereshina, S.A. Nikitin, J. Stepien-Damm, L.D. Gulay, N.Yu. Pankratov, A.A. Salamova, V.N. Verbetsky, W. Suski, J. Alloys Compd. 329, 31–36 (2001)
3. K. Koyama, H. Fujii, S. Mitsudo, M. Motokawa, J. Koujima, Y. Andoh, P.C. Canfield, Physica B 237–238, 548–550 (1997)
4. H. Fujii, H. Sun, Interstitially modified intermetallics of rare earth 3d elements, in Handbook of Magnetic Materials, vol. 9, ed. by K.H.J. Buschow (1995), pp. 304–404
5. R. Verhoef, F.R. de Boer, S. Sinnema, J.J.M. Franse, F. Tomiyama, M. Ono, M. Date, A. Yamagishi, Physica B 177, 223–226 (1992)