1. Department of Chemical and Process Engineering, University of Canterbury, Private Bag 4800, Christchurch, New Zealand
2. Department of Chemistry, University of Melbourne, Parkville, 3052 Victoria, Australia
3. Chemical Thermodynamics Laboratory, La Trobe University, Bendigo, P.O. Box 199, Bendigo, 3552 Victoria, Australia
4. 9 The Crest, Surbiton, Surrey KT5 8JZ, England
5. 18 Dorothy Drive, Morristown, New Jersey 07960