1. in: Physics and Chemistry of II-VI Compounds, Chap. 6, Ed. and , North-Holland Publ. Co., Amsterdam 1967.
2. in: II-VI Semiconducting Compounds, Ed. W. A. Benjamin Inc., New York 1967 (p. 40).
3. in: Luminescence of Inorganic Solids, Chap. 6, Ed. P. Goldberg, Academic Press, New York 1966.
4. Proc. Internat. Conf. Luminescence, Budapest 1966, Ed. Akademiai Kiado, Budapest 1968 (p. 2131).