SpringerLink (Online service), Kamps, J., Tsakonas, G., Manolopoulos, Y., Iliadis, L., & Karydis, I. (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, Proceedings (1st ed. 2017.). Cham: Springer International Publishing : Imprint: Springer.

SpringerLink (Online service), Jaap Kamps, Giannis Tsakonas, Yannis Manolopoulos, Lazaros Iliadis, and Ioannis Karydis. 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, Proceedings. 1st ed. 2017. Cham: Springer International Publishing : Imprint: Springer, 2017.

SpringerLink (Online service), et al. 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, Proceedings. 1st ed. 2017. Cham: Springer International Publishing : Imprint: Springer, 2017.