**10. Acknowledgements**

Firstly, thanks to Sylvia Ross, Head of the School of Art, College of Fine Arts, The University of New South Wales, Sydney for generously approving research time to undertake the writing of this chapter. Next, thanks to several artists for willingly and speedily providing information and imagery of their works, Margaret Benyon, Patrick Boyd, Melissa Cranshaw, Jacques Desbiens, Dieter Jung, Martina Mrongovius, Seth Riskin, Andy Pepper, Martin Richardson and Sally Weber. Also thanks to Jonathan Ross for providing information on Patrick Boyd and David Pizzanelli. Profound thanks go to the inventors and developers of the representational systems discussed and to the many artists who developed the visual language of holograms. Finally, thanks to John Gage for his constant support and for reading and commenting on several drafts.
