Analysis of world terror networks from the reduced Google matrix of WikipediaSamer El Zant, Klaus M. Frahm, Katia Jaffrès-Runser and Dima L. ShepelyanskyEur. Phys. J. B, 91 1 (2018) 7DOI: https://doi.org/10.1140/epjb/e2017-80570-0