Participants who need an invitation letter to apply for a visa should inform the LOC as soon as possible by e-mail (see the contacts). The LOC will issue a letter, which should be presented to the Embassy of Republic of Indonesia or Consulate General competent for the country of their current residence when applying for a visa, to selected students and to lecturers. Indonesia Government had granted visa on arrival favor to several countries to be able to purchase the visa on arrival facility upon their arrival in Indonesia's designed "International Gateway". 
Please visit http://www.embassyofindonesia.org for the details.