G. Pasi, B. Piwowarski, L. Azzopardi, A. Hanbury:
"Advances in Information Retrieval";
in series "LNCS", series editor: D. Hutchison, T. Kanade, J. Kittler, J. Kleinberg, F. Mattern, J. Mitchell, M. Naor, C. Pandu Rangan, B. Steffen, D. Terzopoulos, D. Tygar, G. Weikum; Springer LNCS, 2018, ISBN: 978-3-319-76941-7.