R. Seiger, F. Niebling, M. Korzetz, T. Nicolai, and T. Schlegel. Proceedings of the 1st Workshop on Large-scale and Model-based Interactive Systems: Approaches and Challenges, LMIS 2015, co-located with 7th ACM SIGCHI Symposium on Engineering Interactive Computing Systems (EICS 2015), Duisburg, Germany, June 23, 2015., page 21--28. (2015)