All papers once accepted will be automatically be issued with an invitation letter to the conference by the PROSE system. These letters should support any visa applications that are made.
If you need a letter with any further information OR that you have registered for the conference please contact and state the name of the conference in the subject box: STS2018 Acceptance Letter.
For all visa applications please click on the link .. here .. for further information.
Further information can also be found in these PDFs
General information for visa applicants
Visa options for business conferences, seminars, trade fairs and expos