1. The electron distribution in silicon - I. Experiment
2. Bonding charge density in GaAs
3. Coppens, P. Collected Abstracts of the Sagamore Tenth Conference on Charge, Spin and Momentum Densities. September1–71991, Konstanz. Edited by: Springborg, M., Saenz, A. and Weyrich, W. pp.27Konstanz, Germany: University of Konstanz.
4. The electron distribution in the phases CoAl and NiAl