F. D. Rossini, A. Peigney, C. Laurent, E. Flahaut, R. R. Bacsa et al., Abstract of Powder Diffraction Satellite Meeting of the, Hyperfine Interact, pp.143-507, 1945.

H. J. Topsoe, V. Carles, A. Rousset, J. Jing, S. J. Campbell et al., Solid State Ionics Hyperfine Interact, 41) Bodker, F.; Morup, S. Hyperfine Interact) Yakel, H. L. Int. Met. ReV44) Bi, X. X.; Ganguly, pp.486-309, 1965.