An electronic version of the conference proceedings will be permamently available with open access for free personal use. A link for Vol. 1-3 can be found here or by clicking the following direct links.
Volume 1 - Symposium: Monday, March 19th
Volume 2 - Conference: Tuesday, March 20th + Scientific Poster Session
Volume 3 - Conference: Wednesday, March 21st
Additionally, the online libary of RWTH Aachen University offers direct links to single contributions in the section "Related" of the conference proceedings´ pages.