1. M. Dupuis and M. King, J. Chem. Phys.,68, 3992 (1978).
2. W. Hehre and J. Ditchfield, J. Chem. Phys.,52, 2769 (1970).
3. G. Brown and H. Levy, Acta Crystallogr., Sect. B,35, 659 (1979).
4. Cambridge Crystallographic Database, Cambridge Crystallographic Data Centre, Cambridge, England (1984).
5. N. Yathindra and V. S. R. Rao, Carbohydr. Res., 25, 256 (1972).