Maturity and Innovation in Digital Libraries 20th International Conference on Asia-Pacific Digital Libraries, ICADL 2018, Hamilton, New Zealand, November 19-22, 2018, Proceedings - Dobreva, Milena; Dobreva, Milena; Hinze, Annika; Hinze, Annika; Žumer, Maja; Žumer, Maja (Springer International Publishing : Imprint: Springer, 2018)