Visa requirements & letter of invitation
The documents you need to enter Bulgaria vary depending on where you are from. More information can be found at the Ministry of Foreign Affairs of Bulgaria.
Letter of invitation
Participants that require an official letter of invitation in order to obtain a visa, to raise travel funds or for administrative purposes should apply for this invitation by at least 8 weeks prior to the meeting at the very latest. It should be understood, however, that such an invitation is not a commitment on the part of the organisers to provide financial support. The deadline for requesting a letter of invitation is 03 July 2015.
It should be understood that the organisers can only issue an invitation which includes the period of the conference plus the Saturdays and Sundays directly before and after the conference, respectively.