Please, check passport and visa requirements in due time prior to your departure for Austria, which is a member state of the European Union and signed the Schengen Agreement. First-time visa applications from outside are subject to a few weeks of extra delay.
It is important to apply for any needed visas as early as possible if you plan to travel to access the conference venue. For some countries this can take up to three months.
If needed, you may ask Austropa Interconvention for an appropriate letter of invitation for visa purposes. The following websites offer additional information on the visa application process: