Troels Andreasen, Henning Christiansen, Janusz Kacprzyk, Henrik Legind Larsen, Gabriella Pasi, Olivier Pivert, Guy De Tré, Maria-Amparo Vila, Adnan Yazici, Slawomir Zadrozny: Flexible Query Answering Systems 2015 - Proceedings of the 11th International Conference FQAS 2015, Cracow, Poland, October 26-28, 2015. Advances in Intelligent Systems and Computing 400, Springer 2016, ISBN 978-3-319-26153-9