Authors that need an invitation letter to attend CISIS 2018 please, send and email to: CISIS 2018 Secretariat (oier.echaniz@ehu.eus) giving all the details related to your paper: Id, title, authors, affiliation and also including the proper information about where to send it.

Additionally, please tell us if you need only a scanned version of the letter or if you need the original letter to be sent to you via mail.