In order to obtain an Official Invitation to the IWSN2017 from the Southern Federal University foreign keynote lecturers and participants are supposed to send by e-mail at email@example.com the following documents:
a scanned copy of the passport (the page with the personal data and photo);
a scanned copy of the completed and signed Visa Invitation Application Form.
*see the example of a completed Visa Invitation Application Form
After receiving the Official Invitation Letter from the Southern Federal University you can obtain your Russian visa in the nearest Russian Embassy or Consulate in your country.