Glenn,
That article was a nice intoduction to dwarf monitors. They are really neat little animals. I have red and yellow ackies as well as freckled monitors (
Varanus tristis orientalis) and a pair of red
timorensis.
Python Pete has some info at
http://www.pythonpete.com/info/ackieinf.htm. Pro Exotics has info at
http://www.proexotics.com/care_ackie.html and at
http://www.proexotics.com/FAQ_answer..._so_great.html.
The best book on monitors in general, in my opinion, is
Varanoid Lizards of the World, edited by Pianka, King, and King. You can probably find it at Amazon.com. There also is a book called
Australian Goannas by Vincent and Wilson. That is an Australian Book and can be hard to find though I picked it up recently.
Good luck and enjoy.