Except where otherwise stated in the text, this dissertation is the result of my own work and is not the outcome of work done in collaboration.
This dissertation is not substantially the same as any I have submitted for a degree or diploma or any other qualification at any other university.
No part of my dissertation has already been, or is being currently submitted for any such degree, diploma or other qualification.
This dissertation is copyright ©1998 Hugo Haas.
All trademarks used in this dissertation are hereby acknowledged.