1. Laboratory
for Simulation and Modelling of Particulate Systems, School of Materials
Science and Engineering, The University of New South Wales, Sydney, NSW 2052, Australia
2. Elsa Consulting Group Pty Ltd., P.O. Box 8100, Mt Pleasant, QLD 4740, Australia
3. Minco Tech Australia Pty Ltd., P.O. Box 142, Cardiff, NSW 2285, Australia