1. Applications of rare earths in full-colour EL displays
2. See e.g.Proceedings of Electroluminescence Workshops, Acta Polyteclm. Scand., Ser. Appl. Phys., Ph 179, ed. M. Leskelä and E. Nykänen, 1990 and
3. Electroluminescence, Proc. 6th Int.Workshop, ed. V. P. Singh and J. S. McClure, Cinco Puntos Press, 1992.
4. M. Leppänen , G.Härkönen, A.Pakkala, E.Soininen and R.Törnqvist, Eurodisplay 93, Conference Proceedings, Strasbourg, 1993, p. 229.
5. Bi-Sr-Ca-Cu-O film on sapphire grown by plasma-enhanced halide CVD