R. Pichler, N. May, E. Rahm, S. Wu, K. Hose (ed.):
"Proceedings of the 21th International Conference on Extending Database Technology";
EDBT 2018, Edbt / Icdt 2018, 2018, ISBN: 978-3-89318-078-3; 717 pages.
http://dx.doi.org/10.5441/002/edbt.2018.01