1. Ben-Israel, A., and Greville, T. N. E., 1974, “Generalized Inverse: Theory and Applications,” John Wiley, New York.
2. Burla, M. C., and Giacovazzo, C., 1991, Submitted to Acta Cryst.
3. Cascarano, G., Giacovazzo, C., Camalli, M., Spagna, R., Burla, M. C., Nunzi, A., and Polidori, G., 1984, Acta Cryst., A40:278–283.
4. Cochran, W., 1955, Acta Cryst., 8:473–478.
5. Han, F., and Langs, D. A., 1988, Acta Cryst., A44:563–566.