Business Information Systems 19th International Conference, BIS 2016, Leipzig, Germany, July, 6-8, 2016, Proceedings Abramowicz Witold Heftet / 2016 / Engelsk
Business Information Systems Workshops BIS 2016 International Workshops, Leipzig, Germany, July 6-8, 2016, Revised Papers Abramowicz Witold Heftet / 2017 / Engelsk
Proceedings First International Symposium on Services Science (Isss'9) Alt Rainer Heftet / 2009 / Engelsk
