If you need an invitation letter to attend HAIS 2019, please, send and email to:

hilde.perez@unileon.es

giving all the details related to your paper: Id, title, authors, affiliation and also including the proper information about where to send it.

Also, please say if you need only a scanned versiĆ³n of the letter or if you need the original letter send it to you via mail.