1. Theoretical and Experimental Aspects of the Effects of Point Defects and Disorder on the Vibrations of Crystals—1
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3. in: Phonons in Perfect Lattices and in Lattices with Point Imperfections, Ed. , Oliver and Boyd, Edinburgh/London 1966 (p. 403).
4. in: Physics of Colour Centers, Ed. , Academic Press Inc., 1968 (p. 329).