1. The preparation of pure boron for semiconductor investigations
2. , , and , Physics of Semiconductors, Braunschweig-Paris 1964 (p. 1295);
3. Boron, Vol. 2, Preparation, Properties, and Applications, New York 1965 (p. 35).
4. and , Boron, Vol. 2, New York 1965 (p. 143).
5. , and , Boron, Vol. 2, New York 1965 (p. 169).