1. Frenz, B. A. (1978) The Enraf-Nonius CAD-4 SDP-A Real Time System for concurrent X-ray Data Collection and Crystal Structure Solution. InComputing in crystallography. H. Schenk, Olthof-R. Hazekamp, H. van Koningsveld, and G. C. Basi, (eds.) (Delft Univ. Press).
2. Goedkoop, J. A., and MacGillvary, C. H. (1957)Acta Crystallogr. 10, 125.
3. Jagannathan, N. R. (1989)Magn. Reson. Chem. 27, 941.
4. Stewart, R. F., Davidson, E. R. and Simpson, W. T. (1965).J. Chem. Phys. 42, 3135.
5. Veeman, W. S. (1984)Prog. Nucl. Magn. Reson. Spectrosc. (Pergamon Press, Oxford)16, 193.