All visitors to Australia, except citizens of New Zealand, require a visa in advance of travel. In some cases, you can apply for a visa online.
The Department of Immigration and Border Protection has a useful fact sheet (PDF) outlining visa options.
If needed, ISITA2014 can issue an invitation letter to any participant who is the author of an accepted paper and has completed the registration procedure, including the payment of the registration fee. To request an invitation letter, send an email to firstname.lastname@example.org with the following information:
EDAS paper number
Date of Birth
Passport Date of Issue
Passport Date of Expiry
Applicants for invitation letters are encouraged to start the visa procedure as soon as possible (but after completing the registration), as the procedure may take substantial time, depending upon on your country/region. Please note that the invitation letter does not guarantee your qualification for a visa and your entrance to Australia.