Yannis Manolopoulos, Goce Trajcevski, Margita Kon-Popovska: Advances in Databases and Information Systems - 18th East European Conference, ADBIS 2014, Ohrid, Macedonia, September 7-10, 2014. Proceedings. Lecture Notes in Computer Science 8716, Springer 2014, ISBN 978-3-319-10932-9