If you are unable to attend but still you would like your paper to be considered for publication in the conference proceedings, you may want to consider virtual participation with an early-bird reduced registration price of 250 euros (150 euros for students).
Virtual participation will entitle your paper to be considered for peer review as if it were to be presented at the conference. And, if accepted, it will be listed in the conference program and included in the conference proceedings. In addition you will recieve a copy of the conference proceedings and any other printed material generated for the congress.
And, of course, virtual participants will have access to the webcast.