References
- Pearson , E.F. and McCormick , V. 1973 . J. chem. Phys. , 58 : 1619 – 1619 .
- Maki , A.G. and Sams , R.L. 1975 . J. molec. Structure , 26 : 107 – 107 .
- Hoy , A.R. , Mills , I.M. and Strey , G. 1972 . Molec. Phys. , 24 : 1265 – 1265 .
- Strey , G. and Mills , I.M. 1973 . Molec. Phys. , 26 : 129 – 129 .