References
Jaap Kamps
with Tsakonas, G. , Manolopoulos, Y. , Iliadis, L. , Karydis, I. (eds) (2017). Research and advanced technology for digital libraries: 21st international conference on theory and practice of digital libraries, TPDL 2017, Thessaloniki, Greece, September 18-21, 2017, Springer, Dordrecht.